Fing Fang Foom is an alien dragon from Kakaranathara. He and several others of his race left world in search of planets to conquer. They come to Earth and landed in ancient China, there the invaders changed their forms to mimic humans. They put Foom in a catatonic state as a back up. He is awakened by Chan Liuchow, a teenager who uses Foom to decimate the Communist party of China. Afterwards, the boy uses an herb to put the dragon back to sleep. At some point Foom is captured by The Collector and put into a type of zoo with other monsters. He stays here until the Mole Man attacks. Their freedom doesn't last long as all the escaped monsters are rounded up and put on Monster Island by the Fantastic Four. Foon dislikes being on the island and escapes back to China and into hibernation once again.

Mind Control

A scientist named Doctor Vault managed to mind control Foon into attacking his enemy, It The Living Colossus. Foom resists the mind control long enough to aid the Colossus against an alien invasion. He does so because he wishes to preserve the planet for when his race take it over. Foon becomes controlled again and battles the Colossus, defeating him with his mastery of unarmed combat. Again Foom frees his mind and returns to hibernation. Foom is briefly possessed by a demon named Aan Taanu, after some battling with The Legion of Night, the demon is cast from Foon's body and he returns peacefully, although quite confused, to his slumber.

Mandarin

A man finds the vessel in which Foon and his brethren came to Earth in and steals 10 rings of power from it. He uses these to later become Iron Man's arch enemy, the Mandarin. He is then lead by a member of Foon's race to where the dragon lay sleeping. He tries to use Foon against the Chinese government and soon the other dragons shed their human forms and begin their conquest. Mandarin realizes that he has been used and joins with Iron Man to annihilate the dragons.