Jimmy Yon comes from a long line of military service, but he himself was barred from the military after being born with a crippled leg. Needing a leg brace during his childhood, he was often a target for ridicule from others, except for Vince Armstrong. Now an adult, he still lives at home and works as a game tester, yet another point of contention with his father. When the Guardian's collective past comes back to haunt them, will he be physically able to participate, even if he's willing?
Jimmy Yon was created by Marc Sumerak and Casey Jones in 2004 and first appeared in Guardians # 1.