Captain America [Steve Rogers]; Diamondback; Paladin; the Serpent Society [Anaconda; Bushmaster; Coachwip; Cottonmouth; Fer-de-Lance; King Cobra; Rattler]
Captain America [Steve Rogers]; Asp; Bernie Rosenthal; Black Mamba; Diamondback; Guardsmen; John Jameson; Keener; Mike Farrel; Paladin; the Serpent Society [Anaconda; Black Racer; Bushmaster; Coachwip; Cottonmouth; Fer-de-Lance; King Cobra (leader); Puff Adder; Rattler; Rock Python]
U.S. Agent [John Walker, also as Captain America] (origin); Battlestar (flashback); Captain America [Steve Rogers] (flashback); General Haywerth (flashback); John Walker's parents (flashback); Left-Winger (flashback); the Red Skull [Albert Malik] (flashback); Right-Winger (flashback); the Watchdogs (flashback)
Synopsis
USAgent is trying to determine which memories are true and which are false.