Gunnar Sizemore

Hap McSweeney (voice)

Mark Hamill

Houlihan (voice)

Kira Kosarin

Shannon (voice)

Ron Funches

Sammy (voice)

Flula Borg

Reggie (voice)

Piotr Michael

Narrator

Edie McClurg

Miss Doris (voice)

Mick Wingert

Pappy/Security Guard (voice)

Eric Bauza

Gnome Kids/Ken The Business Gnome (voice)