I'm a fan of anime, but not so much of manga (never been much of a comic person).
Favorite character? That's a hard one to answer. I've loved a lot of characters over the years, but I guess I'd have to pick the cast and anime which has stuck with me since 1999, sentimental fangirl value - namely "Weiß kreuz". All those boys were so addicting xD but my favorite has been Nagi Naoe.
I actually do have a favorite manga too: "Lunatix" by Shouko Ohmine, and my favorite character from that is Meguro Seitarou (but again, that whole cast was awesome).