I can actually answer this because I was sitting there with a notebook trying to get the best quotes:

It started out with Scott Freeman, Jerry Jewell, J. Michael Tatum and Todd Haberkorn. Then Maile Flanagan showed up a little late (and thanks to her I can no longer hear Naruto say "Believe it!" without dying of laughter), and halfway through, Clarine Harp and Chris Bevins showed up.