Monster (Your Shoe's Untied)
The Monster has only appeared in the episode Your Shoe's Untied. He has many eyes and was one of the many people SpongeBob asked how to tie his shoe. He ate SpongeBob and inside of him was the Skeleton. SpongeBob also asked the Skeleton how to tie his shoe.
It is a green monster with a lot of teeth. He has also a lot of eyes. He probably eats fishermen.