Kid omega was a character that Grant Morison created. He was a telepath that got so dispondant that his idol (a gay? mutant fashion designer) was murdered that he started using drugs that boost mutant powers while turning the user psychotic, started to act like a neo-nazi, and began to dressed like he was from clockwork orange. He started a riot at Xavier's school killed several students then he himself ODed, became a pshychic energy being and turned into a Pheonix (because Morison decided that anyone who is an ultra powerful anything can gain Pheonix force powers).
X-man Island is what I call the X-man's base of operations that is located Off the coast of San Francisco. It's basically Astroid X (which did not blow up in the atmosphere but sunk in the Pacific Ocean) and is stuck in place by a massive pylon built by the Atlantians. The island somehow has a beach, which extends several dozen yards even though its a rock on a stick, and is able to sustain its entire populace of 200 mutants through farming (when the astroid is entirely made of rock and is almost completely covered by buildings), and Iceman peeing into a water holding tank daily.
Sadly all the above is true.