i like a variety of pop culture names for pets, with a preference for the strange. space ghost is obviously named after space ghost (coast to coast!), same with his surviving amano buddy, zorak. for months i've had it in my head that the next betta i get, i want him to look like a namor (the submariner, from marvel comics), since male bettas tend to be imperious little guys. :p if i ever got a female i'd name her moon unit (frank zappa's daughter's name), because i will literally name anything that's even vaguely female moon unit. if i had ten female bettas they'd all be named moon unit. i wish i was named moon unit.
I'm a bit (read that as major) book worm, so whenever I come across a word I like or a particularly cool character name I'll add it to my list. When ever I get a new betta I'll scroll through the list to find one that fits them. The end up have odd names, but I don't think they really mind. Currently I have Vertigo, Kai (from The Water Wars by Cameron Stracher), and Siege from my list. Also, I have Anonymous who got his name when I claimed him from my sister who couldn't even care enough to name the poor guy.