



Before I start let me explain something. Back in WWII Captain America and his sidekick Bucky were chasing this missile, Cap and Buck successfully jump and land on it. Buck kicks Cap off the missile and into a lake, then he detonates the missile, killing Bucky but saving NY. Cap was frozen ever seance.
The second Avengers
Powers:
Giant-Man: Can grow to 12 feet tall
Wasp: Can shrink to an inch tall
Captain America: Unbreakable shield and superhuman strength
Iron-Man: Most sophisticated battle suit in the world
Thor: Super strength, unbreakable shield
By this time Hulk had left the group, Iron Man changed his suit, and Ant-Man had found a way to grow big, dobbing himself Giant-Man.
The current Avengers were walking around the lake were Cap had been frozen. Eventually they found Cap's body witch they took out of the ice. Recruiting Cap gave the team more respect.
Eventually, for various different reasons, everybody left the Avengers except Cap. This left Cap to form his own team of Avengers.
The 3rd Avengers
Powers:
Captain America: superhuman strength and unbreakable shield
Quicksilver: Super-speed
The 3rd Avengers, or as some call it, "Cap's Kooky Quartet", because it was mostly made up of former super-villains. Iron-Man (before he left,) thought redeeming former villains would make up for the Hulk. These people were the mutant twins, Quicksilver and Scarlet Witch, and the archer Hawkeye. On many-many-many occasions they proved their rights for redemption, Hawkeye even went on to be a continuous Avenger.