Special Guest Stars H.E.R. voices T. Rex Guest Stars Doug Murray voices Mailbox Shazdeh Kapadia voices Side Table Drawer Nicole Stamp voices Mama Triceratops Doug Murray voices T-Rex Customer Laurie Elliott voices Dino Chef JJ Gerber voices Triceratops Stacey Kay voices Stegosaurus Co Starring Claire Poon as Josh's Friends McKenzie Cornelius as Josh's Friends Athan Giazitzidis as Josh's Friends