Dumbo-Heads were scrapped Beetleworx meant for Epic Mickey. As the name suggests, they were inspired by Dumbo and also by the Pink Elephants from Dumbo's original movie.
The Dumbo-heads had elephant-like heads, a basket mechanism full of debris, and four hook-like mechanical limbs. Presumably, they could walk on walls and throw Mickey with their "catapult-like" baskets filled with debris.