Brain-Child is a mad scientist from an alternate reality in the Marvel Comics universe.
The character, created by Roy Thomas, Len Wein, and Sal Buscema, appeared as a one story villain in The Avengers #86 (March 1971).
Within the context of the stories, Brain-Child is a young mutant from the reality designated Earth-712 by Marvel Comics. Possessing a superhuman intelligence and psionic abilities, he attempts to destroy his world by launching a rocket into the sun to trigger a super-nova. He is defeated by the Squadron Supreme and the dimension traveling Avengers.
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