Captain America [Steve Rogers] (origin); Ms. Rogers [Cap's mother]; General Phillips; Agent R; Abraham Erskine; Dr. Anderson; Heinz Kruger; Bucky Barnes; Franklin D. Roosevelt; Sgt. Duffy; Red Skull (cameo); Nazis; Adolf Hitler (cameo); Baron Zemo (cameo); Master Man (cameo); Warrior Woman (cameo); Baron Blood (cameo); Invaders [Namor the Sub-Mariner; Human Torch [Jim Hammond]; Spitfire; Union Jack] (cameo); The Avengers [Thor; Iron Man [Tony Stark]; Giant-Man [Hank Pym]; Wasp] (all appearances except for Cap himself are flashbacks)
Joe Rubinstein (credited as Many Hands) (pages 1, 3-10, 14-15); Frank Springer ? (credited as Many Hands) (page 2); Frank Giacoia (credited as Many Hands) (pages 11-12); Mike Esposito (credited as Many Hands) (pages 16-22); ? [as Many Hands]