HK-47 is my driod of choice in any situation.
"Suggestion: Shall we find something to kill to cheer ourselves up?"
"Advisory: It is not possible to destroy the master. It is suggested that you run while my blaster warms up."
"Deceit: Nothing to see here miss, just a regular droid. Move along, move along."
"I am quite eager to participate in some unadulterated violence."
"Recitation: First, weapon selection is critical. If I see one more idiot attacking a Jedi with a blaster pistol, then I'll kill them myself."