The Heroes, The Villains, and All The Others

Ash
Brock
Gary
Misty
Tracey
Richie
James
Jesse
Meowth
Miyamoto
Butch
Domino
Cassidy
Giovanni
Mondo
TR's Pokemon (don't aske)
Professor Oak
Nurse Joy
Officer Jenny

(I could've sworn I had had Delia somewhere too... well, I'll write that one someday)