"Tarn-- as in the city?" Yeah, you're going to have to explain a bit more, Ratchet. Shockwave makes a contemplative sound, optics narrowing. "It's a clean cut - you either tidied up the wound or this 'Tarn' knows what he's doing."

Hence the whole.... 'avoiding him' thing. Shockwave straightens out from the crouch he'd gone into without realizing it, hands on his hips. "If you need anything I'll do my best to see that you get it."

Ending up on a ruined Cybertron won't stop him from being him. It's a curse.