Halo Alpha
Halo Alpha

“Humanity is no longer on the defense. We are the giants now.”
— Thomas Lasky[2]

Captain Thomas J. Lasky (SN: 98604-72690-TL) is a human senior naval officer of the UNSC Navy who served throughout the Human-Covenant war and in the post-war years.[3]

Since at least 2552, Lasky had served as Captain Del Rio's executive officer aboard UNSC Infinity.[4] Following Del Rio's removal from command by FLEETCOM after abandoning John-117 on Requiem, Lasky was named acting captain of Infinity and aided John-117 in his battle against the Didact. Six months after the Didact's attack on Earth, Lasky, now Captain, led Infinity in the assault on Requiem as per FLEETCOM's orders. Throughout the campaign in and around Requiem Lasky showed the true potential he held in command, especially in terms of keeping morale high as well as defending his men when Infinity was invaded by Promethean Knights. Also when requesting the help of Catherine Halsey, the Office of Naval Intelligence allowed it, as Lasky had shown his commitment to the UNSC in terms of following every order given, to the extent of keeping John-117's re-emergence secret from Dr. Halsey.

He is the main protagonist of Halo 4: Forward Unto Dawn.


Childhood and education[]

“There's a soldier inside of you Thomas. I can see it. Everyone can see it. You need to see it; I know your brother did.”

Cadet Lasky during his years at CAMS.

Thomas Lasky was born on August 15, 2510 to Colonel Audrey Lasky, his mother, in Mare Erythraeum, Mars. Growing up on Mars, Thomas became very close to his older brother Cadmon.[5] Tom also developed a close relationship to Petra Janecek.[6] He began his officer training as a freshman cadet in Corbulo Academy of Military Science on Circinius IV sometime preceding spring 2526, months after hostilities between the United Nations Space Command and the Covenant began; this development was kept from the students and much of the staff at Corbulo however. Organized into Hastati Squad, a freshman unit in the class of 2529, Lasky originally began as a team leader during field exercises.[5]

During his time in the school, he regularly exchanged video messages with his brother Cadmon; a former student of Corbulo Academy who went on to serve as an ODST fighting on the front lines in the war against the Insurrectionists. Enjoying a close friendship with his brother, Thomas was deeply struck when Cadmon was killed in a battle with Insurrectionists, starting to express doubt about the sensibility of the UNSC waging war against the Insurrectionists and viewing his training with cynicism, failing to take the exercises seriously anymore. As there were no remains, their mother felt Thomas should not leave school to attend his brother's funeral. Meanwhile, Lasky continued to replay his brother's messages in his spare time.[5][7]

“Look, you want people to change, you want this war to end?”
“Yeah, of course.”
— Thomas Lasky
“Then you're going to need people to follow you.”
— Silva and Lasky exchanging words following Mehaffey's lecture on Hannibal.

Lasky's reputation suffered at his constant disregard for the orders of his superiors and displaying a lack of proficient knowledge of infantry tactics. He was subsequently relieved of his duties as team leader, which then fell to squadmate Walter Vickers. Despite this, he persistently ignored orders and continued to cause Hastati to receive low combat scores, resulting in him being shunned by the rest of the squad. Worse, his health declined rapidly during the school's mandatory acclimation to cryosleep; he suffered from large blisters and a persistent cough.

His classmates were unrelenting in their provocation of Thomas, affirming their distaste for the freshman who did not live up to the example set by his brother Cadmon. Days prior to the end of the 2525-2526 school year, Lasky and Vickers were singled out by their squad leader April Orenski resulting in disciplinary physical training for them, and the remainder of Hastati. Frustrated by the verbal and physical harassment he received from his squadmate, Lasky assaulted Vickers in the school's mess hall. Senior cadets and underclassmen alike continued to encourage the altercation, in which the two were performing hand-to-hand combat tactics taught at the academy. Lasky mildly injured Vickers and only ended his violent strife to acknowledge Colonel Mehaffey's presence. The professor took advantage of this quarrel in her mentorship of Lasky, hoping he would embrace the warrior culture of the UNSC and inspire him to become a better leader.[7]

Mehaffey's efforts dawned on the young cadet and he volunteered to lead Hastati moments prior to the start of their final combat exercise, a contest of capture the flag. While waiting for Zuma Squad to approach their flag's location, Lasky had organized Hastati into cover in a tight formation adjacent their flag, a seemingly ill-tactical maneuver. Lasky ordered his men to remove their helmets as they contained IFF transponders that were detectable by the enemy's motion sensors. With Zuma converging on Hastati's flag, Lasky positioned his squad in a formation reminiscent of the pincer movement, a tactic utilized to great effect by Hannibal at Cannae in 216 BCE, taught to the freshman cadets only a day before the exercise by Col. Mehaffey. The enemy soon realized that Lasky had funneled them into a trap and they were swiftly dispatched by two sections of Hastati cadets. The two Hastati elements continued to press in on Zuma's flag with ease, eliminating or capturing all enemy cadets, suffering no casualties of their own in the process. An emboldened Lasky, charging towards Zuma's flag, finally succumbed to his ailing health and collapsed meters away from completing the objective.[7]

Examination by Doctor Hughes of the Academy's medical staff revealed that Lasky's condition was an allergic reaction to the cryo drug cytoprethaline. As cytoprethaline is vital for cryo-sleep to prevent damage to cells, Lasky was judged to be unfit for UNSC service and was to be medically discharged.[8]

Battle of Circinius IV[]

Main article: Battle of Circinius IV

Before the necessary paperwork for his discharge could be completed, Circinius IV was attacked by the hostile alien force known as the Covenant, completely overwhelming the Academy's Marine guard and forcing Lasky and his fellow cadets into front line service.[8] Much of Hastati Squad was killed early on in the action, with Lasky, Orenski, and Michael Sullivan eventually becoming among the only survivors on the entire planet.

The attack on the Academy prompted one of the first deployments of Spartan-II's in the war. Blue Team, led by Master Chief Petty Officer John-117, rescued the cadets. John killed the Spec-Ops Sangheili that had been pursuing the squad and escorted them outside to General Daniel Black's Warthog to escape to a Pelican extraction zone. Lasky drove the Warthog out of the combat zone.[9] However, the Warthog became inoperative after running over a Kig-Yar, and to make matters worse, Silva was mortally wounded by a Needler round, and succumbed to it while escaping two pursuing Mgalekgolo. A mournful Lasky volunteers himself to be a decoy so that John-117 could facilitate a kill on the Hunter with the last remaining fragmentation grenade. Lasky became inspired by the heroism and leadership of the young Spartan supersoldier, and kept Silva's dogtags to honor her memory, remaining with the UNSC despite his medical condition.

Battle of Ankara[]

Main article: Battle of Earth

In 2552, the Covenant launched an all-out assault on the Sol system. UNSC Infinity was still in the early stages of construction in the Oort Cloud, and Lasky found himself on the surface of Luna during the battle. At some point during the battle, Lasky was groundside in the city of Ankara. Although the details of his actions are not known with certainty, it is known that the then-Commander managed to commandeer a Banshee and execute a number of attacks on the enemy whilst under heavy fire.[10]


By the end of the war, Lasky had risen to the rank of Commander in the Navy and had been appointed as the executive officer of UNSC Infinity, the most powerful vessel in the Fleet. While the ship was under construction, Lasky played host to Jun-A266 and five members of the SPARTAN-IV program, Sarah Palmer, Edward Davis, Vladimir Scruggs, Yeong-Hao Holst and Joel Thomas. But while showing them S-Deck, the ship was hijacked by Insurrectionists led by Ilsa Zane, who threatened to depressurize the Infinity if anyone tried to interfere. But this prompted Palmer to armor up and urge her fellow Spartans to follow suit. Jun ordered her to stand down, revealing that Zane was the first Spartan-IV.

As the group made their way to the bridge, they were detected by Zane, who vented all of S-Deck, but the Spartans saved Lasky and Jun from being blown into the vacuum before giving them breathing masks. Lasky then accessed terminal and entered his half of the security codes, as Captain Andrew Del Rio had already entered his, enabling him to shut down the security systems, briefly blinding Zane and preventing her from spacing anyone else. Palmer then came up with a plan for herself and Davis to access the bridge from space while Lasky got in contact with Del Rio. But just as he unlocked the safe room where the Captain and several other officers were being held, Lasky's group came under attack by Innies. Holst used his armor to shield Lasky from their attacks, before the latter sealed the bulkheads to trap the Innies. By the time they returned to the bridge, the Insurrectionists were defeated and Infinity was once again in UNSC control.[11]

Lasky was present aboard Infinity during Terrence Hood and Margaret Parangosky's inspection of the ship and the subsequent trial deployment on Sanghelios to test the ship's capabilities in the guise of assisting Thel 'Vadam and his forces in the ongoing Sangheili civil war in early 2553.[12]

Requiem Expedition[]

Infinity was later dispatched to search for the remaining Halo rings, and set up research bases for decommissioning. Such bases were established on Installations 03 and 05. On Installation 03, the UNSC excavated a massive Forerunner artifact so heavy that it took Infinity three months, according to Dr. Sandra Tillson, just to move it onto Ivanoff Research Station. However, a science team was accidentally vaporized by the artifact and left a derivation of the Forerunner glyph system. Finding coordinates embedded in it, Infinity set a course for the coordinates, leading them to a Shield World called Requiem. Without warning, the planet suddenly scanned Infinity and pulled the ship into its gravity well. Infinity crash landed inside the planet's artificial environment and came under attack by Jul 'Mdama's Covenant and Prometheans, led by the Didact, a surviving Forerunner. Captain Andrew Del Rio dispatched Lasky and Sarah Palmer on recon, believing that Infinity could provide cover and hold off the attack at the same time. However, they only survived with the timely intervention of the presumed KIA John-117, who drove the Didact off.

During their time on Requiem, Lasky's relationship with John-117 would prove vital to the Spartan's recovery and the outcome of their mission.[13][14] He demonstrated unwavering trust in the Spartan's judgement, as opposed to Captain Del Rio's skepticism. This trust led to Lasky aiding John-117's escape from Infinity to oppose the Ur-Didact when Del Rio refused to take action.

When Infinity returned to UNSC space, FLEETCOM was unhappy to learn that Del Rio left John-117 on Requiem and relieved him of command. Lasky took de facto command of Infinity and aided John against the Didact as the Forerunner attempted to use the Composer on Earth, specifically the city of New Phoenix. John-117 defeated the Didact and destroyed the Composer with a HAVOK Tactical Nuclear Weapon, though he lost his AI Cortana in the process. Infinity managed to locate John-117 amongst the debris of the Didact's ship and gave him a hero's welcome.

Lasky later found John-117 on an observation deck with a clear view of Earth. He could tell the Spartan was grieving over Cortana's sacrifice and sympathized with him, as he too lost people he cared about. John stated that their duty as soldiers is to protect humanity, whatever the cost. Lasky notes that he thinks that soldiers and humanity are not two different things and insists that soldiers are not machines, just people. He then leaves John-117 alone and promises to have the deck cleared so he can have time to cope.

Requiem Campaign[]

“The word is given.”
— Captain Lasky ordering Infinity's sub-vessels to attack at the onset of the Second Battle of Requiem

Six months after the attack on Earth, Lasky was already the rank of Captain and was given command of Infinity. Under his command Infinity and its crew returned to Requiem to clear it of all Jul 'Mdama's Covenant and hostile Promethean forces in order for the UNSC to establish research facilities inside the planet. Infinity received new Spartan-IV Fireteams before it jumped into slipspace, lead by Lasky and Commander Sarah Palmer. While discussing the battle plan, Palmer believed her Spartans should spend more time training, but Lasky overruled her.

When Infinity later exited slipspace it caught the Covenant fleet by surprise, ramming the command ship and splitting it in half. Lasky then gave the go-ahead for UNSC frigates to be deployed from Infinity's underbelly to cover for the Fireteams' Pelicans descent into Requiem. With this, the Second Battle of Requiem had begun.

Fireteam Crimson later returned with a Forerunner artifact, which then spontaneously activated, causing a disruption in Infinity's systems, including loss of artificial gravity and of power to the engine, causing the ship to lose its orbit. Luckily, Palmer managed to deactivate the artifact with a hard kick, restoring Infinity's systems to normal. The artifact then became stuck to the floor, refusing to react from any further attempts of "physical persuasion." Dr. Henry Glassman attempted to inspect the artifact, only to be accidentally teleported to Requiem by it.

Lasky needed expert help in determining what the artifact was and summoned Doctor Halsey to Infinity. Palmer showed outright hostility towards her, reminding Lasky that she was locked up for a reason. Halsey was able to determine that the artifact was communing with Infinity's engines, the only Forerunner tech installed on the ship, as well as several Human systems, and something on Requiem.

Sometime later, Palmer informed Lasky that Fireteam Castle was shot down on a supply run. The area they were in was the same place where John-117 encountered The Librarian AI. Unfortunately, the place was occupied by a Covenant remnant faction lead by Jul 'Mdama.

Fireteam Majestic was later dispatched to Requiem to retrieve a package. Upon bringing it to Halsey, she determined it to be similar to an AI matrix. Palmer and Majestic were observing the dissection when the device let out a flash of light and projected images of New Phoenix on the lab monitors. Halsey determined that this was from a Promethean's memories and confronted Lasky, who confesses that the UNSC has been aware that the Prometheans were created from ancient Humans. She pointed out that this Promethean was once a human who lived in New Phoenix. As Lasky expressed confusion as to how these memories got to Requiem, Gabriel Thorne abruptly left the room. Halsey realized he was staring at an image of the artifact. Palmer and Lasky escorted her back to it. Palmer mocked Halsey for not having the answer to everything, and Halsey retorted that she was excluded from information.

Palmer then became suspicious when she heard Halsey mutter the Librarian's name. She snatched the doctor's datapad and discovered a secret communique with Jul 'Mdama, which she passed to Lasky.

Lasky then ordered Palmer to take Halsey into custody for withholding vital information. As they took her to Lasky's ready room, Halsey negatively compared the UNSC to children in a sandbox. Palmer coldly reminded her that the Office of Naval Intelligence would put her in something much smaller than a sandbox. The scientist defended that she didn't share information with her contact, whom she believed would benefit humanity and criticized Palmer for being too trigger-happy. Just then, Roland, Infinity's AI reported that Thorne had been detected alive on Requiem.

Lasky had Halsey returned to the brig while Fireteam Majestic was sent after their missing teammate. However, Halsey used an AI override code on Roland to force him to follow her commands, gather everything the UNSC had on the Librarian, and directly contact Jul. Roland eventually managed to overcome the override and alerted security. A disappointed Lasky told Halsey that he has underestimated her long enough and threatens to throw her in a Cryo-chamber. The doctor responds with a slap, revealing that she now knows John-117 was on Infinity and demands to know why this information was kept from her.

Before Lasky could respond, Prometheans started materializing and spreading through the ship. One group of Prometheans appeared before Lasky's entourage and opened fire; Halsey was knocked down by a fallen soldier in the ensuing fight, forcing Lasky to grab a shotgun from another fallen soldier to save her. He then quickly got to the nearest intercom, ordering Infinity to battle stations before he and Halsey ran for their lives. They met up with Palmer before heading to the bridge where Lasky ordered that they move away from Requiem, but Roland informed him that the artifact acted as a slipspace anchor, keeping them in place. Suddenly, a Promethean appeared and grabbed Halsey before vanishing, and Palmer realized that the Prometheans were after her all along.

Lasky later reported to Admiral Serin Osman, Paragonsky's successor as head of ONI, and received orders to terminate Dr. Halsey. Lasky felt morally opposed to the order, believing that soldiers shouldn't act as hitmen; nevertheless, Palmer chose to follow the order so that Lasky wouldn't have to suffer a court martial. The Captain, unable to dissuade her, contacted Fireteam Majestic and ordered them to rescue Halsey. Unfortunately, Jul had already escaped with Dr. Halsey.

But that was the least of their worries, as Jul had set Requiem to collide with its sun and ordered his forces to evacuate the planet. Glassman determined from a map recovered by Majestic that there were two artifacts on Requiem similar to the one on Infinity. Deactivating them would free the ship, enabling them to escape before they plunged into the sun too. Fireteams Majestic and Crimson worked separately to reach and deactivate each device. Though successful, they barely managed to land on Infinity before the supernova caused by Requiem's collision caught up with them, only narrowly making it to slipspace.

Afterwards, Palmer criticized Lasky for sending Majestic to interfere with her mission. The Captain defended himself, claiming he sent them on a rescue mission, but she didn't see a difference. They then entered the lab where Glassman was examining one half of the Janus Key, who had determined the artifact to be inert without the other half.

Ealen IV[]

Lasky saving Lord Hood

Lasky saving Lord Hood, before running to a parts depot for cover.

After Infinity's return to Earth, Lasky informed Palmer that they were requested for a debriefing at HIGHCOM Facility Bravo-6. During the debriefing, Lord Hood, Serin Osman, and other Admirals informally debriefed Lasky on the 2nd campaign at Requiem. Lasky explained what happened at Requiem, but hesitated to tell Serin Osman why Halsey wasn't assassinated. Before he could answer, Sarah Palmer covered for him by telling Osman that it was her fault for missing the shot, not Lasky's. Back on the Infinity, Lord Hood told Lasky that there's been an escalation in Jiralhanae raiding parties against the Sangheili throughout Joint-occupational zones; as a result, he has arranged for a peace conference between the Arbiter and a Jiralhanae Chieftan on Ealen IV, with Palmer, Fireteam Bailey, and Fireteam Jackknife as security. As the parties are engaged in the peace conference, the meeting was ambushed by Jul 'Mdama's Covenant forces. During the skirmish, the humans, Jiralhanae, and Arbiter tried to make their way to a shuttle, only to have it destroyed by banshees. Lord Hood was saved by Lasky, who killed two Unggoy charging the Admiral. The Humans, Jiralhanae, and Arbiter were trapped on the planet with no way of contacting Infinity for reinforcements.[15]

Lasky went off to find a way to re-establish communications with the Infinity while Palmer and the security detail regrouped at the Redoubt. As Lasky and Naiya Ray searched for old Covenant communications equipment, they were attacked by a Sangheili Warrior. The Warrior was eliminated and the source of the communications jamming was found and destroyed.[16] He and Ray then acquired a pair of Banshees and observed the Covenant heading for the Redoubt.

Lasky was then informed by Commander Bradley that the Jiralhanae and Sangheili forces were starting to converge on each other. Lasky was then patched through to both fleets by Infinity and was able to convince both fleets to settle their differences and hunt for the real threat. With no other choice, Lasky ordered Fireteam Bailey to stay behind on Ealen IV and ensure that the delegates made it back to Infinity safely.[17]

Thomas Lasky's Investigation[]

Tom and Naiya find Petra on Escala 3

Tom and Naiya find Petra.

Back on Infinity, Lord Hood discussed Lasky’s off the books investigation as to how the negotiations were discovered. Hood expressed his concern to Lasky and Naiya Ray about who he’s willing to take the situation to. Lasky is then told by Hood that he only has ninety-six hours to complete his secret investigation on the matter. Tom and Naiya soon arrived at Castiglione, the capital of the outer colony world known as Escala 3. There they encountered a journalist named Petra Janecek who was not only an old friend of Lasky's, but was also the intended contact of their mission. As Lasky and Petra were catching up, Lasky asked her for her help in discovering which mole in the UNSC divulged the location of the peace negotiations. Petra agreed to help in return for information on John 117’s current status and whereabouts.[6]

ZefTrahl explaing SangheiliJiralhanae relations

Zef 'Trahl explaining the feud between the Sangheili and the Jiralhanae.

After their discussion on Escala 3, Lasky, Petra, and Spartan Ray travelled to the sangheili colony world of Karava. After a brief skirmish with a sangheili named ‘Lordan, and travelling to one of the planet's trade ports, they finally meet Petra’s contact, a sangheili named Zef 'Trahl. Zef explains to them how the Covenant has broken up into hundreds of factions, with no central body to rule them all. He also tells them that the mysterious man who ambushed the peace summit was James Cutter’s son, Daniel Clayton.[18]

Lasky and Ray later return to Infinity, which had suffered damage from a trap set by Clayton, who was summarily captured. Palmer assured him that it was Hood's fault for not waiting for him.[19]

Battle of Zeta Halo[]

Lasky was still in command of the Infinity when the ship was involved in the Battle of Zeta Halo. When his ship was boarded, he ordered its evacuation. Palmer escorted him to a escape pod. However, after he left the ship, his whereabouts remain unknown.[20]


“We're soldiers, not hitmen.”
— Thomas Lasky to Sarah Palmer on Admiral Osman's order to execute Dr Halsey

Known for his renegade attitude as an "innie sympathizer," during his youth, Thomas was shunned universally by squad-mates and other classmates alike. Lasky was not hesitant whatsoever to express his views on the ongoing conflict with the colonies, even with the ardent stance on the conquering of the rebel effort by the majority of Corbulo Academy's staff and cadet corps. As a result, many believed that Thomas would not live up to the level of excellency set by his brother Cadmon, by then a marine junior officer in the Orbital Drop Shock Troopers, nor the expectations of his estranged mother. Few expected him to even graduate from the academy.

At the conclusion of his freshman year from 2525 to 2526, however, lingering doubts about his competency as a future officer were alleviated. Concern over his constant displays of pacifism and his sympathy towards the Insurrectionist cause fell aside as he successfully led his squad into combat using tactics that overwhelmed the enemy, causing them to peacefully capitulate.

Lasky also has a very high moral standard; when Admiral Osman ordered the execution of Catherine Halsey, he attempted to persuade Commander Sarah Palmer not to commit this action—showing his compassion for members of the UNSC as well as civilians whom he joined the UNSC to protect, not to kill.


Lasky SilvakissFUD

Thomas and Chyler kissing on the night of the attack.


Lasky SilvakissFUD

Audrey Lasky[]

Thomas' mother; she was not present for the majority of his life, leading to her son barely knowing her.

Cadmon Lasky[]

Lasky's older brother who kept in touch through video calls. He was killed during a deployment on Andesia.


Chyler Silva[]

Thomas' friend and love interest. She was killed during the Battle of Circinius IV.

Michael Sullivan[]

Fellow cadet and friend at Corbulo Academy.

  • Sarah Palmer - A Spartan-IV and Commander of all Spartan-IV Fireteams aboard UNSC Infinity. She is also Thomas' good friend.
  • John-117 - A Spartan-II who Lasky has great respect for due to him saving his life. Lasky supported him over his own commanding officer to the point of disobedience. Lasky later attempted to comfort John after Cortana's "death," leaving him alone when he understood that was what he wanted.


  • He is shown with the three gold bars of a Commander, but has a gold oak leaf, which represents only a Lieutenant Commander in the United States Navy/Coast Guard. A Commander is represented with a silver oak leaf.
  • Lasky is given a fragment of Hunter armor by John-117 after Lasky helped him defeat that Hunter by drawing the Hunter's fire so that John could take it down with a frag grenade. He still has the fragment, now worn smooth, when UNSC Infinity investigates the distress signal of UNSC Forward Unto Dawn.
  • Lasky was born on Mars and grew up in the city of New Harmony, and went to school on Circinius IV.[21]
  • McFarlane Toys originally had plans to release an action figure based on Thomas Lasky as part of the Halo 4 Series 2 line, but later cancelled the figure.
  • The Mega Bloks Signature Series UNSC Mammoth set included a Lasky minifigure upon release in 2013.[22]
  • Mega Bloks' Halo Heroes Series 7 included an updated minifigure of Lasky in 2018.




Graphic Halo Halo Alpha has a collection of quotes related to Thomas Lasky on its quotes page.
  1. 1.0 1.1 1.2 Halo 4: The Essential Visual Guide – page 13
  2. Halo 4 - Spartan Ops Episode 1
  3. YouTube: Halo 4 Flag Stabbing and Spartan Cosplay - Comic-Con 2012
  4. Halo: The Thursday War - page 48
  5. 5.0 5.1 5.2 Halo 4: Forward Unto Dawn Part 1
  6. 6.0 6.1 Halo: Escalation - Issue 4
  7. 7.0 7.1 7.2 Halo 4: Forward Unto Dawn Part 2
  8. 8.0 8.1 Halo 4: Forward Unto Dawn Part 3
  9. Halo 4: Forward Unto Dawn, episode 4
  10. Halo: Escalation, Issue #2
  11. Halo: Initiation
  12. Halo: The Thursday War
  13. YouTube: First Look: Halo 4 Forward Unto Dawn (Live Action Series)
  14. 343 Sparkast 014
  15. Halo: Escalation - Issue 1
  16. Halo: Escalation - Issue 2
  17. Halo: Escalation - Issue 3
  18. Halo: Escalation - Issue 5
  19. Halo: Escalation - Issue 6
  20. Halo The Rubicon Protocol ch. 1
  21. Halo 4: level - Epilogue
  22. Mega Bloks Signature Series UNSC Mammoth product page