(pissed) "These insignificant mortals are lesser than us. So why are we even here?! There's nothing to destroy and nothing worth conquering."

(Warning) "As much as you despise demons, we share a common goal. It would be much more efficient for us to work together instead of trying to destroy us."

(Respectful) "So you're the only rational one in your group huh? Then please allow me to offer this advice. You can't beat Lucifer, not by your own strengths. Which is why I'll work with you until he's defeated."