Clay monsters

The claymotion monsters are made up of clay but brought to life with Harry Claymore's use of black magic. They went mad and turned on their creator after 3D computer generated animation was invented and they were no longer needed in movies.

Cyclops (leader)
It is the leader of the claymation monsters. It captures Soos and Stan Pines and put them in clay to turn them into clay. When Mabel conquers her fear, she fights the Cyclops by turning it into the Star Claymation monster because it is made out of clay. It then turns good and helps Mabel defeat the other Claymation monsters.

Skeleton Army
They attack Dipper Pines and Mabel Pines to capture and put them in clay to turn them into clay. But Mabel escaped and turned the Cyclops monster into a Star monster to fight them, killing them all. They are the only claymation monsters to hold weapons, such as swords and shields.

Star
It was the Cyclops claymation monster that was turned into a Star claymation monster when Mabel knows that turning something she is scared of into something that she likes can help conquer her fear, so she turns the Cyclops into a Star because the Star is a character from a movie she likes. It then helps Mabel defeat the other claymation monsters.

Medusa with a Scorpion body (shadow)
It appears and fights the Star Claymation monster but instead got mixed with it into a big block of clay.

Unicorns (shadow)
Four unicorns fall from the above to join the battle with the other Claymation monsters but instead dropped on them and mixed into a big block of clay thus ending the battle.Dipper Pines,Mabel Pines,Stan Pines,Soos and Harry Claymore was amused and clapped for the ending. Harry said it was the best ending ever.