Hihimaru possesses a great amount of strength, and is well-known for it by the residents of Kuri, being called the "raging baboon of the mountain". It had developed a great reputation while serving the Beasts Pirates, and its keepers were concerned at it being tarnished when the komainu Komachiyo put up a fight against it. Its loss was seen as significant by the Beasts Pirates, and caused them to take an interest in Tama and her animal taming powers.
A group of Beasts Pirates and Hihimaru threatened a young girl named Tama when she ended up mentioning the Kozuki Family, and the komainu Komachiyo attacked Hihimaru to protect her. The two fought viciously, and Hihimaru threw Komachiyo into the Thousand Sunny. The Beasts Pirates told Hihimaru to go after the nearby Monkey D. Luffy after Luffy attacked them, but Hihimaru quickly became subdued when facing Luffy. Tama then offered Hihimaru some kibi-dango, which tamed the baboon. Hihimaru and Komachiyo then took Luffy and Tama to the home of Tama and her master.