Fan Casting Future threat in X-Men: Brotherhood of Mutants

(Post-credits scene)

Role added by @bighero616 on May 10, 2026

Human / Humanoid

Character Description

On an island, a scientist known as Sinestro, an affiliate of the Hellfire Club, observes the X-Men's fight, his focus mainly on two mutants, Cyclops and Marvel Girl. In the background of the laboratory, it can be seen that he has been experimenting on mutants.

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Fan Casting

X-Men: Brotherhood of Mutants

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