What do a Golden Age hero, a Western hero, and a romance heroine have in common? They all join the Avengers during one of the team's busier eras, presented here! Worlds, centuries, and genres clash as the Avengers battle Kang in the past and the Serpent Crown on the Earth next door! Then, when civil war grips both Atlantis and Latveria, which side must the Avengers take? If it's up to Doctor Doom, it'll be the evil they know, not the evil they don't! Plus: Graviton, the Grim Reaper, voodoo, mad science, and more! Featuring the Champions, the Squadron Supreme, and the Circus of Crime! Collects Avengers (1963) #141-163, Annual #6, and Super-Villain Team-Up #9.