Ape Escape 2 & 3
Ratchet & Clank 1-2 and Crack in Time
Jak and Daxter 1
Sly Cooper 1-3
I've also recently bought BioShock 1 and 2, but I haven't managed to play them that much yet. :-/
I highly suggest Jak and Daxter: The Precursor Legacy, one of my favorite platformers and probably overall game ever. Its a great contrast to the more gun-heavy Jak 2 and Jak 3.
Big Daddy (BioShock) yes
Cole MacGrath (inFamous) yes!!
Evil Cole MacGrath (inFamous) obviously =P
Colonel Radec (Killzone 2) played but noy much
Dante (Devil May Cry) played the collection, new one looks great
Fat Princess (Fat Princess)yes, really fun game actually
Heihachi Mishima (Tekken) nope, maybe once ata friends house
Jak and Daxter (Jak and Daxter) yup
Kratos (God of War) played through the main trilogy
Nariko (Heavenly Sword) nope, but I might get it now
Nathan Drake (Uncharted) of course
PaRappa the Rapper (PaRappa the Rapper) nope
Raiden (Metal Gear)played mgs4
Ratchet and Clank (Ratchet and Clank) yupp!
Sackboy (LittleBigPlanet) one of my favorite games, played all 4
Sir Daniel Fortesque (MediEvil) yup
Sly Cooper (Sly Cooper) yes!
Spike (Ape Escape) played some ape excape racing game I think
Sweet Tooth (Twisted Metal) yup, the new one
Toro - nope
that's a pretty good percentage, sony