Iron Man

Iron Man (real name Anthony Edward "Tony" Stark ) is a is a widely-known superhero and a member of the Avengers.

Biography
Tony Stark is the genius inventor/billionaire/philanthropist owner of Stark Industries. With his super high-tech Iron Man suit, he is practically indestructible, able to fly, and has a large selection of weapons to choose from - but it's Tony's quick thinking and ability to adapt and improvise that make him an effective leader of the Avengers.

Personality
Iron Man can be shown at times to be self-absorbed and arrogant, only to worry for himself on the battlefield. But actually he is caring and worries for others, which is why he didn't initially want to become the official leader of The Avengers. But after his genius intelligence and quick-thinking proved to be effective on the battlefield, he agreed to become the new leader, replacing Captain America.

Powers and abilities
The miniaturized Arc Reactor in Tony's chest grants him not only the ability to keep his heart from failing, but it also generates extra energy which was diverted to grant himself "upgrades", giving him enhanced mental processing/focus to make himself smarter than he already was. It along granted enhanced reflexes and strength. The reactor's unique signature also allows Tony to be the only one that can access his armor (not including the Red Skull, who stole the original reactor as well as Mark 49 Armor to become the Iron Skull).

Relationships
Captain America - Former Team leader, Teamate and Ally

Thor - Teammate and Ally

Hulk - Teammate and Ally

Black Widow - Teammate and Ally

Hawkeye - Teammate and Ally

Falcon - Teammate and Ally