Groggysaurus

The Groggysaurus 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 giant creature that resembles a dinosaur. Its overall color is gray, with some red stripes. It has white fur above and below his head and neck. Its neck is always curved, and his tongue stays out of his mouth.

It appears in One Piece Film: Strong World, attacking a village in the flying islands with other creatures.