The young mutant known as Basilisk grew up with much persecution due to his abnormal appearance, and as such developed a very aggressive personality. Having lower than average intelligence, Basilisk was quick to anger, but his rage was just as easily quelled.
After the X-Men went public, Basilisk became a student at the Xavier Institute. He was placed in Xorn's Special Class. On a camping trip with the Special Class, Basilisk was attacked by the U-Men, humans who hunted mutants for their organs. Basilisk saved the class from one of the U-Men, but only after Ernst told him that No-Girl would agree to date him.
Shortly afterwards, Xorn revealed himself to be the mutant terrorist Magneto (though he was later revealed to have been an impostor). Basilisk joined his Brotherhood. Unfortunately, during Xorn's assault against New York City, he struck out at Basilisk, accidentally killing him.
In his eye socket rests a camera-like device that allows Basilisk to control his superhuman mutant ability to emit a pulse of high-frequency strobe light directly from his brain. This light completely paralyzes any sentient being that looks at it, causing them to fall into a rigid fascinated state akin to a deer caught in the headlights of a car. The length of this effect varies depending upon the strength of will of whomever Basilisk stares at.