 They also confirmed more cameos, with Rush drummer and lyricist Neil Peart, voice actor H. Jon Benjamin and his comedy partner Jon Glaser, and "Saturday Night Live"s Fred Armisen to make appearances.Heavy metal band Mastodon stated in a Decibel article that they would be performing during the opening, and that the band would be animated as a bucket of popcorn, a soda, a hot dog, and a candy bar.They were actually animated as a pretzel, a pile of nachos, an "Icecaps" box, and a gumdrop.