|Master of Alchemy|
|Esteban Corazan del Diablo|
|Spanish citizen with a criminal record in the United States.|
|Nation or Planet of Origin|
|Base of Operations|
Possible Extra-Dimensional Hideout
|Master of the sorcery-science alchemy.|
Costume hiding a vast array of alchemistic formulas and potions.
Dragon Man: Synthetic humanoid dragon with superhuman strength, speed, stamina and durability.
Homunculus: Artificial being created in the creators image.
Philosophers Stone: Jewel enabling the wielder to break the laws of nature.
Alpha Flight Vol. 1
Avengers Vol. 3
Fantastic Four Vol. 1 ,3 & 4
|Fantastic Four Vol. 1 #30 (Sept. 1964)|
|Stan Lee & Jack Kirby|
Esteban Diablo was born the son of a Spanish nobleman in early 9th Century. Curious and inventive by nature, the restless young man was fascinated with the ancient science of alchemy. Using funds borrowed from his inheritance, Diablo roamed Europe in search of documents and artifacts of ancient alchemy, as well as rare potions and herbs with which to experiment. Within a decade, he became the world's greatest living authority on alchemy, having discovered or concocted countless potions with bizarre properties. Haughty and cunning, Diablo began to put his alchemical knowledge to use for personal gain.
Journeying to Transylvania to investigate its legendary secrets, Diablo settled there and established permanent laboratory facilities. Under suspicious circumstances, he acquired a spacious castle and began his work.
although most of his potions' effects proved transitory, Diablo discovered an elixir that could retard aging. Drinking it, he embarked on a reign of terror over the surrounding Transylvanians, until a mob of villagers caught him unaware and imprisoned him in a massive crypt. Trapped there until the 20th Century, when he mesmerized the Thing of the Fantastic Four to free him. Not having aged appreciably during his century of confinement, he began to plot his alchemical conquests anew as Diablo.