Jon Hamm was going to be Mr. Sinister in ‘New Mutants’ before reshoot plans

Meanwhile, remember the Essex Corporation that was teased at the end of X-Men: Apocalypse? Well not only was New Mutants going to feature that mysterious company, but The Tracking Board has learned that Jon Hamm was originally going to appear as Mr. Sinister in a tag at the end of New Mutants, and Boone filmed material that led up to that reveal, only for Fox to change their minds after shooting had been completed. Now it’ll be Antonio Banderas playing an unspecified villain (one who isn’t expected to be Mr. Sinister) in the New Mutants tag. Additionally, Mr. Sinister wasn’t the only character Fox steered away from New Mutants, as Warlock appeared in early drafts of the script before the character was deemed too expensive.