Hmm..I think I'd have a lot of things to say.
"Hey, big nose."
"Rayman! Why, come in!"
"You are an EGGFISH!"
"Where's Globox?"
"Hi. I am...Dark Rayman. Sue me."
I know they are random, but those are the things I'd say. (Well, unless I get surprised, as I don't expect it to ever happen? )