In Comics
Further information: Mastermind (comics)- Mastermind (Jason Wyngarde), a Marvel Comics supervillain, an adversary of the X-Men
- Lady Mastermind, one of his daughters
- Mastermind (Martinique Jason), his other daughter
- Mastermind (computer), the alien artificial intelligence that first appeared in Captain Britain
- Master Mind (comic strip), a strip in the British comic Buster
- Mastermind Excello (disambiguation), a name used by two unrelated Marvel Comics superheroes
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