[Knuckles opened the door and stepped aside.]

Huh. Human form? Wasn't expectin' thgat. Come in. You want something to drink before you get to work, man?

[Harley, of course, took immediate notice of the newcomer, scuttling over from where he'd been perched on the back of the couch. He was, as Knuckles had described, incredibly large, dwarfing the Echidna in his excitement to greet the visitor.]

And this is Harley.