You know what, I know its old news and stuff, but I'm going to take a little bit and post up some histories here, incase this gets saved for posterity or something.
Okay, first thing, we know of four major alien races.
The first two came here around the middle of the American Civil War looking for refuge and, with the permission of the national powers of the day, settled in Earth, most underground, but some using technology to appear human and assimiliating into the human population.
Mostly they stayed among themselves, but it wasn't long before the first hybrids were born. Hybrids were still kinda rare, still are, actually...I think there's only like...100,000 or so adult hybrids with powers out there, and most hybrids only descend from one of the two races. It's the people with weird powers (like me) that have both alien races in their blood.
The third major alien race we know of are called the Bulmeer, they look sort of like tall monster things with claws and long heads kinda like the xenomorphs in Aliens a long long time ago. That was the 80s, right, ancient movie. Anyway, they jump really high and use lasers and stuff (Daniel and Nathan don't like lasers...guess it's cause they use a lot of darkness stuff.).
The fourth race are called the Alkon and right now, we don't know much about them other than that they run the Bulmeer.
Everybody kinda expects that they'll be back sometime.