Ed gives a small shrug. It's probably the only apology that Oswald will ever here for whatever happened; Ed knows himself and neither of him would apologise if they felt it was warranted.

Riddler has a temper. Riddler has a hidden fount of rage that Ed's total lack of anger barely keeps smothered. And if Riddler were wronged, or Ed were wronged...

He isn't sure what Riddler could do.

The elevator grinds to a halt and open upon the lower city. "Welcome to the Down."