What is the bad guy's character name in "Fantastic Four"?

The bad guy’s character name in Fantastic Four is Doctor Doom. He is the armored supervillain and longtime archenemy of Marvel’s Fantastic Four.

Doctor Doom’s real name is Victor Werner von Doom, the monarch of the fictional European country Latveria. He is both a brilliant scientist and a skilled sorcerer, combining advanced technology with mystical power. His metal mask and green hooded armor conceal facial injuries and reinforce his image as a ruler and conqueror.

Doctor Doom first appeared in The Fantastic Four #5, published in 1962, and was created by writer-editor Stan Lee and artist Jack Kirby. His central rivalry is with Reed Richards, also known as Mister Fantastic. Doom blames Richards for contributing to the accident that scarred him, although Doom’s own arrogance and impatience also play a role in the tragedy. He is more than a simple monster villain: stories often portray him as proud, calculating, and occasionally bound by a personal code of honor.