Arcee doesn't answer his question right away, instead focused on his face for a flicker of expression that isn't pathetically earnest. It's so unlike any other bot she's run into that it takes her completely by surprise. Huh.

"I was looking for someone. Anyone who got in my way I killed. Didn't matter who." Autobot or Decepticon - they all fell on her sword when they came between her and her goal. "I found him eventually," and that's when her expression turns deadly and sharp, corners of her mouth turning up into a cruel smile.