GoAnimate/The Pagemaster

Gumball (from The Amazing World of Gumball) as Richard Tyler

Henry (from Kablam!) as Adventure

Bing Bong (from Inside Out) as Horror

June (from Kablam!) as Fantasy

Capper (from My Little Pony: The Movie) as Moby Dick

Rarity (from My Little Pony: Friendship is Magic) as The Dragon