1. Doctor Zoidberg from Futurama. That's a fictional secret for a fictional character. I'm relatively sure he really is as poor as he's always made out to be. But it would be funny if he wasn't.
2. Ray Kowalski from due South. That's all fan speculation, but gee it was fun. Hands! Hahahaha.
3. Lilah Morgan from Angel. This is the only "secret" with any actual basis... which is probably why weppers got it :D
And because I really loved this idea; one more for the road...