Tōshirō Hitsugaya (日番谷 冬獅郎 Hitsugaya Tōshirō ) is the captain of the 10th Division in the Gotei 13. His lieutenant is Rangiku Matsumoto. Hitsugaya is the lead character of theBleach-based film The DiamondDust Rebellion. Tōshirō Hitsugaya is very young by Soul Society standards. Born in Rukongai, he became the youngest ever to reach captain rank. Thus, he is called a "boy genius" or a "child prodigy" by many. Hitsugaya is generally mature and serious, in contrast to his free-spirited lieutenant, Rangiku Matsumoto, although he can sometimes be short-tempered and irritable. Despite their personality differences, he and Matsumoto seem to be very close. Hitsugaya is shown to also be easily irked by others goofing off or drawing unneeded attention to themselves, as shown when he led a team of Soul Reapers into Ichigo Kurosaki's school. He hates anything that he deems childish and hates being described as something close to a child, evident in a filler episode when he meets Ichigo's sister, Karin, who pats him over the head further angering him. This is also shown more in the omake chapters, where he is repeatedly mistaken for a child, much to his annoyance.
Hyōrinmaru's bankai has four known special techniques. The first is Ryūsenka (竜霰花, literally "dragon hail flower"), which freezes any enemy Hitsugaya stabs, locking them into a cocoon of ice and freezing them to the core. Once frozen, Hitsugaya can shatter his opponent. The second is Sennen Hyōrō (千年氷牢, literally "thousand-year ice prison"), which forms a multitude of ice pillars using the moisture in the atmosphere. These pillars hold the enemy prisoner for a thousand years, also freezing them. His third technique, Guncho Tsurara (literally "icicle flock"), he launches a multitude of ice shards in an attempt to impale his opponent. His fourth, and implied most powerful move is called Hyoten Hyakkaso (literally "frozen sky-hundred flowers funeral"). This attack causes 100 snow flakes to fall from the sky, freezing anything they touch in a flower like shape. When all 100 flakes fall, the life of the one trapped by the attack is over.