Nope Dark Matter is a campaign setting for D20Modern. Basically it is a modern day conspiracy theory based game. There are aliens and Illuminati and reptile people and medic and miracles and stuff, but most people don't know or believe that stuff.
Hmm. I wouldn’t know any particulars, but you could take cues from the old Gargoyles cartoon? It had most of those, and was also pretty great.
My X-Men Redesigns!
Students: Storm, Sunfire, Jubilee, Anole, Armor, and Colossus
Faculty: Cyclops and Emma Frost (co-headmasters), Xorn and Rogue (teachers/counselors/squad leaders)
So this would be my take on the X-Men (if i were given the opportunity to reboot it in a different dimension). In this world, Xavier dies and the X-Men disband, but Cyclops, with the help of former villain Emma Frost, attempt to continue Xaviers dream. With Emma using Cerebro, they manage to recruit two other faculty members, Xorn (an openly mutant Chinese scientist) and Rogue (an Avenger). From here they end up recruiting six young mutants and they go on crazy adventures and what not.