Born in 2237 or 2238,[Non-game 1] Colvin is a kind and friendly man who acts welcoming even to those he has just met.[1][2][Non-game 1] Colvin is a religious man, saying prayers before entering battle and sees the killing of Super Mutants as freeing them from torment.[3][4][Non-game 1]
Within Lyons' Pride, Colvin works alongside Knight CaptainDusk as the group's snipers, with some competition between the two on which is the more proficient sharpshooter.[5][6]
↑Colvin: "You don't need to worry. You're with friends now. We'll see you safely through." (Colvin's dialogue)
↑Colvin: "Welcome, friend. My brothers may be gruff but they will lay down their lives for you." (Colvin's dialogue)
↑ 3.03.1Colvin: "Yea though I walk through the valley of the shadow of death." (Colvin's dialogue)
↑Colvin: "All clear, Sentinel. Five mutants released from their torment. The rest are keeping their heads down." (Colvin's dialogue)
↑The Lone Wanderer: "So what's your story?" Dusk: "My 'story'? I blow the head off of anything more'n two hundred meters downrange. I'm the best shot in the Brotherhood of Steel, bar none. Not even Colvin can match my kill count. That's my 'story.' " (Dusk's dialogue)
↑The Lone Wanderer: "What do you do here?" Dusk: "I'm a sniper with the Pride. Put any mutie bastard within one mile of me and my rifle and, well... pack it up troops. Fight's over. Colvin thinks he's a better shot. Man's delusional." (Dusk's dialogue)
Non-game
↑ 1.01.11.2Fallout 3 Official Game Guide Game of the Year Edition p.80: "KNIGHT CAPTAIN COLVIN" "A sniper in Lyons' Pride, Colvin is 40, friendly, and warm to everyone; he has priest-like tendencies. To him, combat is like worship, and he treats his rifle as a holy object and his targets as the unfortunate victims of his god's wrath. He says a prayer for the soul of each mutant he kills. He's extremely experienced, and completely unflappable: all according to god's will. He can be found guarding Galaxy News Radio from Super Mutants." (Fallout 3 Official Game Guide Game of the Year Edition Wasteland Census)