Kang the Conqueror

Kang is a supervillain, a tyrant who ruled Earth in the 41st century until he was overthrown. He was imprisoned between dimensions using an obelisk-like device that was sent back in time to Ancient Egypt, and discovered in the 21st century. Released by accident at a museum, Kang threatened havoc upon the city if the obelisk was not returned to him. When he locates it in the Avengers' mansion, he captures Wasp, holding her hostage in exchange for the obelisk. Ant-Man returns it to him for the life of his wife. Unbeknownst to Kang, it has been tampered with, and it shocks him when he inserts it into his armor. Subsequently, he is returned to his dimensional prison, and the obelisk is destroyed, ensuring he will stay imprisoned forever. He first appeared in the episode Kang.