Anthony "Tony" Stark fights crime as Iron Man.
Some time in the past a piece of shrapnel was lodged near Tony Stark's heart. To stay alive Tony built a special battery to keep his heart beating. Tony also built an armored suit and used it to fight crime as Iron Man.
Iron Man's main adversary was the Mandarin whom he fought on several occasions.
Iron Man was also one of the founding members of the Avengers.
Tony was once subpoenaed to testify at the U.S. Senate because various senators wanted to know the secrets of the Iron Man armor. However, this put a lot of stress on Tony's heart which caused him to pass out while testifying.
Iron Man was voiced by John Vernon.
First adapted version of the character outside the comics.