After being unable to control his powers, Terry Sorenson was driven insane. His mother tried to cure him with her research but didn't have the funds, resulting in Terry beginning a life of crime. He first encountered the heroes Human Torch and Ice-Man.
Equinox was created by Len Wein and Gil Kane in 1974 and first appeared in Marvel Team-Up # 23.
Then later,while trying to rob a bank, he fought with Spider-Man but escaped. He has also fought other heroes such as Hank Pym , Wasp, and the Falcon. Ridding himself of the life of crime, he was one of the first members of Villains Anonymous(Vil-Anon), and seemingly reformed.
During the Civil War, Equinox opposed SHRA and joined other villians including: Shockwave, Goldbug, and Bloodshed, to get out of the country. However, Vienna of Heroes For Hire was the one to get them out, and the villains had no clue they were being set up. After Capture they were all sentenced to The Negative Zone Prison Alpha.
The Initiative/Secret Invasion
Equinox is currently a member of Freedom Force, Montana's premiere superhero team. In the story arc "Secret Invasion" he has been confirmed as a skrull. Cloud 9, a teammate of his, killed him after it was revealed that he was a Skrull and he attacked his team.
He was one of several earthlings rescued from a Skrull vessel by Iron Man at the end of the invasion.
Astonishing Tales: The Thing
Equinox later reveals himself to the Thing as they sat next to each other at a bar. The Thing tells Equinox that it was his day off and didn't need a second rate villain to cause any trouble while he watched the game. Equinox tells the Thing that he doesn't want to fight but to apologize for his previous actions with other heroes. He tells the Thing his origin and how his father had killed himself in the lab explosion that radiated him with thermionic emissions. He tells the Thing that the thermionic cycles were affecting his mind state and how it made him psychotic and homicidal. His recollection of events that took place were scattered in his mind so he read police reports about his attacks on various heroes and even his mother. He tells the Thing that he went into a coma for six years after his defeat at the Baxter building. His mother contracted breast cancer during that time and that she died alone in a bed at the Sloan-Kettering Medical Center. Equinox tells the Thing that they both have something in common and knows how it feels to be changed forever by circumstances beyond their control. Equinox asked the Thing to extend his apologies to Mr. Fantastic and the rest of the Fantastic Four before he walked away.
Ends of the Earth
Equinox comes into conflict with Spider-Man when he starts to burn down a building in East Harlem for protection money and encases several firefighter's feet in ice. Spider-Man negates Equinox's elemental powers when he strikes him with a retardant gel he created at Horizon Labs.
Powers and Abilities
Equinox has the powers of pyrokinesis (fire manipulation) and cryo/thermokinesis (temperature manipulation). He is able to achieve this by putting himself in to a state of thermodynamic flux, his body simultaneously producing extreme cold and extreme heat. He is able to use these abilities to grant him superhuman strength. Equinox has gained more control of his powers in recent times. Physical Characteristics
Weight: 200 lbs
Marvel Ultimate Alliance 2 (2009)
Equinox is shown to be injected with mind-controlling nanites as the heroes infiltrate Prison 42. He poses as an enemy and must be defeated multiple times through the duration of the game.