"Oh." Well, by process of elimination, he should be able to figure it out. With a nervous laugh, he comments with, "I'm gonna guess it's not Ironhide that you're referring to."

Fulcrum shrugs as much as he can in his position. "Well, I... I don't know if I want to. I've never wanted to kill anyone." He pauses. "...Okay, except maybe Tarn and his team, but I don't think anyone's surprised by that."