O'Brien (The Babysitter)

"I don't miss! I never miss!"

- Himself

O'Brian was an ODST with the 105th ODST Division stationed aboard an Unnamed Destroyer. He was first heard complaining about being a "babysitter" and everyone "forgetting" what a great shot he is, calling the second sniper on the mission a "farmboy moose hunter". He was very upset when he was informed he wasn't the primary shooter, being labeled as back-up. He became speechless when he learned that the primary shooter was a Spartan. During the misson as he was about to take out a Grunt, he stepped on a branch, getting the Grunt's attention, the Grunt froze and O'Brian shot him, it is than we see a Brute Chieftain behind him, that O'Brian had not noticed. The Chieftain was about to kill O'Brian with his Gravity Hammer when he was stopped by the Spartan, O'Brian was then knocked to the edge of waterfall, he lost his grip and fell.