(As Gargantua) Gargantua (Edward Cobert; initially known as Leviathan) is a fictional character appearing in American comic books published by Marvel Comics.

Gargantua first appeared in The New Defenders #126 (December 1983), and was created by writer J. M. DeMatteis and artist Alan Kupperberg.

agent and scientist before testing the Project: Lazarus serum on himself, permanently transforming him into a giant form with limited intelligence.

and dubbed Leviathan, he escapes custody and battles the Defenders on multiple occasions.

[2][3] In subsequent appearances, Cobert becomes known as Gargantua, joins Doctor Octopus' incarnation of the Masters of Evil, and serves the Mad Thinker.