Terrance "Terry" Sorenson was the son of two well-achieved research scientists. Though his mother Margay was successful, his father David was widely disregarded due to his wild theories on altering thermodynamics. His father became frustrated, and started drinking and abusing his wife and son. Eventually Terry, who was seventeen at the time, and his mom left him. While they were leaving, one of David Sorenson's experimental devices caused an explosion which killed him and mutated his son who had tried to save him.
Terry's mother tried to cure her son's induced mutation, but he eventually mutated further and not only became more powerful but also mentally unstable. Terry turned to crime after his mother used up their money with her experiments, taking on the name "Equinox." After a brief fight with Spider-Man, Equinox went up against Human Torch and Iceman, but managed to escape. He again fought against Spider-Man, who teamed up with Wasp, Yellowjacket, and Margay Sorenson by negating his powers with a thermic stabilizer that had been built in the Fantastic Four's lab.
Credit: marvel.fandom.com
Key Issues & Appearances
1
Significant comic book appearances featuring Equinox
