Renowned actor Jon Hamm is closer than ever to making his MCU debut. Hamm, best known for Mad Men, is reportedly in talks with Marvel to adapt a comic book storyline he's passionate about. He's even proactively pitched himself for multiple MCU roles.

Hamm's near-miss with a Marvel role is well-documented. He was originally cast as Mister Sinister in Fox's X-Men franchise, specifically for The New Mutants. However, his scenes were ultimately cut due to the film's troubled production.

A recent Hollywood Reporter profile revealed Hamm's renewed interest in joining the MCU. He disclosed pitching himself for roles based on a comic book he admires, and Marvel's expressed interest in adapting that same comic has fueled speculation. While the specific comic remains undisclosed, fans are actively fancasting him, with Doctor Doom from the Fantastic Four being a popular choice. Hamm himself previously expressed interest in this role.

Hamm's career is marked by a diverse range of roles, avoiding typecasting. Following his recent work in Fargo and The Morning Show, he's a top contender for many "actors yet to appear in the MCU" lists. While he passed on Green Lantern, his enthusiasm for a comic book role remains, making a villainous part, perhaps even a revisit to Mister Sinister under Disney's banner, a strong possibility.

Though Doctor Doom is a fan-favorite suggestion, his inclusion in the upcoming Fantastic Four reboot isn't confirmed, with Galactus potentially serving as the primary antagonist. Ultimately, the future of Hamm's MCU involvement hinges on whether his and Marvel's collaborative project makes it to the screen.