In City Of Heroes you can make a muscular female character, then get The Collector's patch and make her look ripped

Angela Belti from Power Instinct, and Rila from Breakers and Breakers' Revenge, are about my favorites.

Indeed, Lingster.  Most WWE games have a "Create a Wrestler" mode.  I've made Andrah from PCC on my WWE: Day of Reckoning game for my GCN, and the likeness ain't too shabby.  Just wish her boobs could be more round and less pointy, though.

There's also some fighting game with buff girls... I recall a buff, silver-haired, black woman named Vanessa in some game, but the name escapes me.

Ah, merci, D-S.

BTW, two more games I just thought of.  First is Weaponlord.  Check out the screenshots found under the links on this page to see the buff female fighters: http://users4.ev1.net/~sheath/Weaponlord.htm

Second, is Magic Pengel.  Well, actually, this game doesn't have muscular girls in it, but it can.  Basically, it's a monster fighting game where you create your own monsters, which are then animated in 3D (I don't have a link... just google it).  If you've got good drawing skills, you can pull off a reasonably cool amazon.  I've made Andrah for this game as well, armed with the hammer and spikey-chain-whip-thingy she weilded in that one fan-made, Soul Caliber-based picture of her.  And even if you can't draw good muscle girls, it's still a neat game.