Kuma Bartholomew is a Warlord, and a Revolutionary Agent with a current bounty of 340,000,000 Berries. He was once feared as an extremely vicious pirate, earning himself the title, “Mountain Tyrant” (山暴君, Yama Bō-kun). He is also the very first completed, but a unusual type of cyborg called “Pacifista” developed by Dr. Vegapunk and has been codenamed as: PX-0

He is a minor antagonist of the Long Ring Long Land Arc, and a major antagonist in the Navyford Arc, where he took part in the Battle of Navyford and sided with the Navy, along with most of the other Seven Warlords of the Sea.