Dr. Davis was a criminal scientist who attempted to use a bizarre vehicle he had created, piloted by an unwilling man named Fred Jenkins, to steal a rare statue. Jenkins betrayed Davis to Green Arrow, who captured the scientist. Shortly afterward though, free again somehow, Davis returned and attempted to gain revenge on Green Arrow with the aid of Mr Memory and his De-Memorizor ray. Mr. Memory was defeated by the Justice League of America and jailed; presumably, they caught up with Davis and with Mr. Memory's other allies later.



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