KOTOR: Revan, Darth Malak, HK-47, Jolee Bindo, Bastilla
KOTOR2 TSL: The Exile (a.k.a. Meetra Surik in canon) Darth Traya, Darth Sion, Darth Nihilus, T3, Atton.
TOR: W.I.P. (Unable to play atm, so I'll get back to you on that!) Though I am looking forward to soloing vs Darth Malgus...maybe...