Cowball

The Cowball (カウボール) is a creature developed by Dr. Indigo using the chemical SIQ for Shiki's plot to use monstrous creatures to attack East Blue to force the World Government to submit to him.

It is a small bull-like creature. His skin, fur and eyes are red colored, while his horns are pink. Even being small, his body is very large in comparison to his hooves, still, he can launch himself in high speed, resembling a bullet being shot from a gun.

It appears in One Piece Film: Strong World in group trying to attack Sanji and Usopp, though they weren't defeated, they broke the ground below the pirates, making them fall.