Finn

A white dog-like character with a blue shirt and green backpack raises his arms in excitement inside a wooden structure, then walks through a dark cave with glowing red and yellow orbs, later sitting with hands bound while a yellow dog-like character sits beside him, then performs a handstand in a wooden house with a small white dog and a yellow dog-like character, and finally dances with three skeletons and a yellow character in a green suit on a red stage.