Alright, I'll see what I can think up here...
Revan - "Keep your Allies close and your enemies closer." "Deception. Retribution. Alive." "The path of a jedi comes to two crossroads. Good and Evil.
Malak - "True Sith wear Capes." "Destruction blooms in my enemies."
Carth - "Locked and Loaded."
Bastila - "My Battle Meditation will see you to the end."
HK-47 - "Query: Why aren't you at O-R.com?" "Statement: Only Meatbags would fight like that."
Canderous - "True Mandalorian blood runs through my veins." "You don't need a suit to fight Mandalorian." "I bleed Battle!"
Exile - "Exiled. Turned Away. Returned."
Atton - "Want some of my blaster, hotshot?"
Bao-Dur - "I don't need two real arms to take you down."
Brianna - "My skills override yours."
Visas - "Pick your battles wisely."
HK-47 - "Theory: My blasters are the answer to anything." "Yes, Master?"
Mandalore - "You picked a fight you'll regret."
Kreia - "Your path is... interesting."
Sion - "Pity that you can't even stare me straight in the eyes." "The Darkside consumes my soul." "Just lay down."
Nihilus - "Evil hides it's face."
Mandalore (Ultimate) - "I'll add your head with the rest." "Answer to my vibroblade, lesser."
Wake up. You were dreaming. What's your name?