"I wouldn't ask that of you," Ratchet says seriously, pausing for a moment to look up at Megatron's face. "I'll listen if you choose to tell me, but it's not something I'd want you to relive just to satisfy some stupid curiosity of mine. I wouldn't do that to you."

He watches the oddly softening expression on Megatron's face, his chin tilting curiously.

"...who's Terminus?"