Harold Sutton and his wife were exposed to high-levels of radiation that seemed to have no last effect on either of them. A short time later they had a son they named Arnold, who was born a mutant with a genius level intellect and Harold couldn't believe that his son was actually reading geometry books as a toddler.[1]

By the age of nine Arnold was a scientist working for the military, but physically hideous due to his over-sized brain and seen as a freak. When he was ten, he refused to work unless he could have his own island, and angry at how people used him for his mind, but avoided him as a person, he decided to destroy the world. However, he was thwarted by the Squadron Supreme and the Avengers.[1]

Doctor Spectrum took away his memories and super intelligence, by way of his Power Prism, transforming him into a normal boy. The Squadron Supreme promised he'd have a normal life when they returned him to his parents.[1]

Harold Sutton and his family were killed along with the other natives of Earth when this reality was destroyed.[2]

Joseph Ledger (Earth-712), Harold Sutton (Earth-712), and Arnold Sutton (Earth-712) from Avengers Vol 1 86 0001

Earth-712 version of Reed and Sue Richards

Arnold Sutton's history parallels that of Franklin Richards of Earth-616, who himself would become Psi-Lord as he grew older, as both gained their mighty mental faculties from radiation which their parents had absorbed before they were born. In fact, Arnold's father Harold and his mother were themselves physically identical to Reed and Sue Richards, although neither possessed superpowers nor was Harold a notable scientist on his world. However, Arnold's own genius and mental manipulating abilities seemed to compensate for this imbalance between the worlds.

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