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Professor Dalton created a machine which could duplicate matter.

Unfortunately, this machine created imperfect duplicates. One day, the machine's ray accidentally created an imperfect duplicate of Superboy. This short-lived creature was called Bizarro. Year later, the villainous Lex Luthor intentionally rebuilt Dalton's flawed machine in order to create an adult Bizarro.

  • This version of Professor Dalton (Earth-One), including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths event and later restored following the rebirth of the infinite Multiverse during the Dark Crisis of 2022-2023. Even though other versions of the character may have appeared, this information does not apply to those versions.

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