Don Kamakiriri

Don Kamakiriri (ドン・カマキリリ) is a creature developed by Dr. Indigo for Shiki's plot to use monstrous creatures to attack East Blue to force the World Government to submit to him.

A looming wicked cutter, this dangerous guy is always angry. He has extraordinary arm scythes, these fearful blades can cut and tear through nearly anything, demonstrated by cutting through solid stone with extreme ease.

Don Kamakiriri first appeared in One Piece Film: Strong World, quickly defeating a Mori Dako that was chasing Luffy. It, however, was soon defeated by a Terror Guma.

Trivia
Don Kamakiriri's name comes from the Japanese words for praying mantis: "kamakiri (カマキリ)," and "kiriri (きりり)" which means to be very tense referring to the angry attitude of this creature.