“The All-Star” Dr. Slugger (医強打者, Dokutaa Suraggaa) is the care taker of King Bijou, acting his Mechanic and seeming to be his own subordinate that King Bijou could stand. Originally Slugger was a scientist who had worked with Caesar Clown, but after an unseen battle between the two. Slugger had left his job at the marine labs and Vegapunks labs as well, trying to find a suitable master to work for. He had come across King Bijou right after he had left Dr. Nanbu’s loyalty and started to his own fold. Slugger was the first and still only member of his fold to this day.