Gamma Jack's superpower was the ability to create controlled bursts of radiation; he was easily recognized by his wave-like hairstyle. He believed supers to be a "superior race." The Operation Kronos database assigned him a threat rating of 7.9, the second highest after Mr. Incredible (9.1). Gamma Jack did manage to destroy the fifth version of the Omnidroid during the training sessions for Operation Kronos, but he was promptly killed by its successor model, the Omnidroid 6.