Halo Alpha
Halo Alpha

“Die? Didn't you know? Spartans never die.”
— Kurt's last words[2]

Lieutenant Commander Kurt-051, born Kurt M. Trevelyan and also known as Kurt Ambrose,[3] (UNSCMID: 045888947) was a SPARTAN-II super-soldier. One of the early aspiring leaders of the SPARTAN-II Program, he was close to many of the other SPARTANs, before he went missing during a mission in 2531. He was presumed dead and in accordance with ONI Directive-930 reported as being MIA. Although the other SPARTANs were led to believe that Kurt had died, he was actually recruited by Colonel James Ackerson to lead the SPARTAN-III program.[4] "Ambrose" is not his true surname; rather Colonel Ackerson gave it to him after his abduction, thanks to the extensive mental conditioning that took place in the SPARTAN-II program that caused Kurt to forget his full name.

Personality and description[]

Kurt was unusually sociable for a SPARTAN, and considered the well-being of his teammates more important than the orders of his commanding officers. While the rest of his teammates were closely guarded and private unless in the presence of fellow SPARTANs, Kurt spent a considerable amount of time making friends, such as with the drill instructors. This made some of his fellow SPARTANs uneasy, as they were not comfortable with a leader who was so easily distracted. Despite these perceptions, Kurt proved himself to be an extremely proficient leader.[5] After his indoctrination into the SPARTAN-III program, his leadership qualities became even more pronounced.

Kurt's intuition was unrivaled, and he possessed an uncanny ability to "feel" traps, and avoid walking into them. When something was wrong, Kurt would often get a bad feeling. When John-117 and Kurt were on separate teams during training, John often lost as a result of Kurt's "funny feelings." His teammates grew to view this as an asset, trusting Kurt's instincts and common sense.[5]


Early childhood[]

Kurt Trevelyan was born on October 19, 2511 in Mira, eventually growing up in Kuiper on Circumstance.[3] When he was marked as physically and mentally superior by Dr. Catherine Halsey in 2517, she had him abducted and sent to Reach to begin his SPARTAN training. As with the other candidates to become SPARTANs, he was replaced with a flash clone that would appear to die of natural causes, just like all the other future SPARTANs' replacements. Not much is known of Kurt's early training, except that he would often beat John's team in training.

During his training, Kurt quickly proved himself to be one of the program's top candidates. Both Dr. Halsey and Chief Petty Officer Mendez identified him as one of four emerging leaders within the Spartan-II group, along with Jerome-092, Frederic-104, and John-117. Chief Mendez expressed his belief the most strongly in Kurt as having the skills to lead the entire Spartan-II group, although Halsey disagreed, instead believing John would fulfill that role.[3]

Kurt's leadership skills were correctly observed, as he later became one of the earliest known leaders of the Spartan-II's Green Team.

Early career[]

During training, he often was selected to lead Green Team in field exercises, of which he and his team won a fair number. He graduated with the rest of the SPARTANs in 2525 after augmentation. After the death of Sam-034 during the Battle of Chi Ceti, Kurt replaced Sam on Blue Team under John-117's leadership and command.[5] At first, his teammates were uneasy and apprehensive with the transition, but their minds were changed on a mission to Camp New Hope to recover nuclear warheads. There Kurt's "feelings" saved the rest of the SPARTANs from being captured by the URF General Howard Graves. Graves' ingenious plan to use a gravity disruptor to fool their MJOLNIR armor into thinking gravity had increased to a 10-G environment, therefore knocking them unconscious, then keeping them immobile with neural disruption collars had worked, and John, Kelly, Fred, and Linda were trapped in Graves' clutches. Kurt, at this time, was outside prepping the modified warthog (under John's order) when he blinked the red acknowledgment light. Kurt saved them with four Asteroidea anti-personnel mines, then removed their collars and got them out in a patchwork Warthog. Any mixed feelings John had previously vanished. John told Kurt never to hide his "feelings" again, and Kelly, better with words than John, welcomed the SPARTAN to the team.[6]


Soon after, Kurt disappeared during an extravehicular mission to Station Delphi at Groombridge 34 to investigate a ruptured Shaw-Fujikawa Translight Engine when his T-PACK "malfunctioned," sending him spinning away into deep space. He was listed as MIA and presumed KIA. However, he had actually been recruited by Colonel James Ackerson. He was given a new surname and an officer's commission, as Lieutenant, Junior Grade. Kurt Ambrose was then sent to Onyx to train the SPARTAN-IIIs. Over time, he was promoted for his successful efforts in training the new SPARTANs, eventually reaching the rank of Lieutenant Commander.

Death on Onyx[]

Main article: Battle of Onyx

At the outbreak of hostilities in Zone-67, Kurt regrouped with Tom-B292 and Lucy-B091, the last two remaining SPARTANs of Beta Company, and willfully used the SPI armor used by the SPARTAN-IIIs instead of his superior Mark IV armor. He told Lucy that he was one of them now, a SPARTAN III, once again displaying his utmost concern for the morale of his team. Later on during the battle for Onyx, he reunited with Dr. Catherine Halsey and Kelly-087. Dr. Halsey, along with the help of the ONI AI Endless Summer, was able to send a message through Slipspace by using Cortana's original broadcast from Installation 05. She asked Lord Hood to send SPARTAN reinforcements to Onyx in order to acquire possible Forerunner technology. The SPARTAN-IIs on Earth, Fred-104, Will-043, and Linda-058 infiltrated and captured a Covenant vessel, the Bloodied Spirit, which they took to Onyx where they rendezvoused with Kurt. Kurt then led the SPARTANs on a mission into the newly uncovered Forerunner city on Onyx to locate the technology Dr. Halsey had been looking for.

The mission was abruptly complicated due to the Covenant fleet led by Voro Nar 'Mantakree locating Onyx and learning of the humans' mission. Kurt and his team managed to acquire information pertaining to Onyx, managed to destroy a Sentinel production factory and locate the missing SPARTANs of Team Katana. However instead of escaping, Kurt led his team towards the Core Room where he realized the true purpose of Onyx as a Shield World. He died in the Core Room Antechamber, saving the lives of Blue Team by opting to stay outside the rift and fight off the Covenant by detonating two FENRIS Nuclear Warheads. However, he commissioned Fred as an officer before sending them to the interior of the Shield World in order to give the remaining SPARTANs a leader to follow.


Kurt, according to John, originally made him uneasy. He did this by taking a lot of time to get to know his teammates on a more personal level. Other SPARTAN-IIs (besides Samuel-034) did not care for "friends" as much as he did, and preferred to keep their relationships more disciplined and professional. In the end he died as a brilliant commander in the eyes of those he had known, and as a noble hero who considered his SPARTAN-IIIs and the SPARTAN-IIs as comrades and friends, John-117 included. Using his MJOLNIR Armor's transponder, which survived Onyx's destruction, the UNSC was able to find the shield world and recover the surviving personnel within. After the survivors of the Battle of Onyx were extracted by the UNSC, ONI would rename the Shield World in his honor.


  • The name "Ambrose," the fictitious last name that was assigned to him by Ackerson, comes from the late Latin or Greek name Ambrosius, which was derived from the Greek name Αμβρόσιος (Αmbrosios) meaning "immortal" which could reference the fact that SPARTANs are never marked as KIA, in an attempt to uphold the belief that SPARTANs never die. This served to preserve morale during the declining state of the Human-Covenant War. In addition, the "Immortals" of the Persian Empire were famously the elite opponents of the Spartans at the Battle of Thermopylae. He could have also been named Ambrose after the late author Stephen Ambrose, who wrote many books about war, his most famous being Band of Brothers. Also Band of Brothers is the 506th Parachute Infantry Regiment in which Currahee Mountain is named after.
  • Kurt is the only known SPARTAN-II to wear SPI armor. Because of this, he is the only SPARTAN-II that did not have any energy shields in Halo: Ghosts of Onyx, and did not bother to use the Kig-Yar point defense gauntlet when he used the SPI Armor like the SPARTAN-IIIs did. He decided to wear SPI armor instead of MJOLNIR because he felt he would disconnect himself from his SPARTAN-III's. He felt he no longer belonged in the MJOLNIR armor, despite the vastly greater protection that it would provide him. Ironically, this may have been what killed him, as the greater protection may have led to the blow from an Mgalekgolo not doing nearly as much damage to his armor and himself. On the other hand, his still intact Spartan armor transponder survived Onyx's destruction and allowed the UNSC to find the shield world and recover the surviving personnel within.
  • Kurt's Spartan tag, 051, is the code that Catherine-B320 uses to arm the MFDD in the Deliver Hope trailer.
  • Kurt, along with Catherine-B320 and Fhajad-084, are the third highest-ranking SPARTANs in the Halo universe, all being Lieutenant Commander.
  • Kurt and Jorge-052 are the only known SPARTAN-IIs involved in the SPARTAN-III program.
  • "Kurt" is one of the name options for customized Loadouts in Halo: Reach, along with the members of Noble Team and several SPARTAN-II's.[7]
  • Kurt-051 is the last known SPARTAN-II casualty of the Human-Covenant war.
  • In addition, Kurt-051 is the only SPARTAN-II ever listed as KIA instead of the required listing of MIA that was used to boost morale.



  1. Halo: Ghosts of Onyx, Page 173
  2. Halo: Ghosts of Onyx, page 372
  3. 3.0 3.1 3.2 Halo: Reach, Dr. Halsey's personal journal
  4. Halo: Ghosts of Onyx, page 49 ("Alone now, Ackerson reviewed his files and made plans. The first matter of business was already in the works: on-screen appeared the career record of SPARTAN-051.")
  5. 5.0 5.1 5.2 Halo: Ghosts of Onyx, page 33
  6. Halo: Ghosts of Onyx, page 37 ("Welcome to Blue, Spartan. I know we'll make a great team.")
  7. Halo: Reach, Firefight