He sort of creeped Bravo (portrayed by Bethany) out. He had the gun and while him and Lima (portrayed by Issac) were messing around, they witnessed Sierra (portrayed by Jordan) stab Bravo. Lima keeps jumping in Sierra's face to buy Oscar some time, but he has such terrible aim he still gets stabbed. Lima then picks up the gun and runs, but is stabbed before he gets a chance to get far enough to more safely fire at Sierra, losing the Bystanders the game.
Oscar looks a lot like Chakalata Soup.