Who was the halftime guest with Homer and Mac at the SH game?

[MARQTTE]

There was somebody that I didn't recognize before the game who sat behind the MU bench and was hugging some players and talking to Mac before the game.  He had a headset on by Homer and Mac at halftime.  Anybody know who that was?

Right after the first half, I noticed Mac jump out of his seat and run to get drinks for everybody at halftime.  I would think that somebody would do that for them but I guess not.