From the four fighting games i've ever played:
Street Fighter: Chun Li, There is just something about a woman who's leg's rival my body size that I just love, lord help me I just love big chicks (Read, not fat chicks)
Soul Calibur: When i played the original (Soul Edge) or the playstation I was all over Sigfried (itf it's spelt like that) and then with the more recent titles it just seemed like natural progression for me to move onto Nightmare. On the bench I also like to have some Cervantes handy.
Tekken: I've always been the tpe to play the gimmicky characters when it came to Tekken, like Gon, Kuma/Panda, Mokujin and Tetsujin. Just the silly characters that tend to make a one game appearance.
SSBB: Mr. Game&Watch and MetaKnight, I love them both, so, so much!