Powers: Equinox can generate intense heat and cold. When his power is active, waves of heat and cold pass across his skin, covering him in alternating sheets of flame and ice. These thermic shifts increase his physical strength and durability. He can generate constructs of fire or ice, such as fireballs or ice slides, and can fire blasts of fire or ice.
Bio: Sorenson's parents were both scientists. One of Terry's father's devices exploded, mutating him into Equinox.
Notes: While first glimpsed in Giant-Size Spider-Man #1, he wasn't fully seen or identified until Marvel Team-Up #23.