Taker's been coming out of character more and more recently anyway. He's done commercials using his real name as well as appeared as himself on WWE DVDs like the 50 year history of WWE set. So getting up at the podium and giving a speech at the HOF ceremony like everyone else shouldn't be a problem or "too out of character" for him any longer. Besides, I feel he should have already long transformed back into the 1997/1998 incarnation of his character anyway, the version of the Dead Man that would do all the usual Undertaker stuff (dress in black, roll his eyes into the back of his head, give a cryptic promo or two here and there, put people in caskets, etc.) but who would also speak regularly on the mic.