Meet the Robinsons (2007)/Monsters, Inc

Hiccup (from How to Train Your Dragon) as James P. Sullivan

Lewis Robinson as Mike Wazowski

Anais (from The Amazing World of Gumball) as Boo

Drago Bludvist (from How to Train Your Dragon 2) as Mr. Waternoose

Master Xehanort (from Kingdom Hearts: Birth by Sleep) as Randall Boggs