Hitsugaya is generally mature and serious, in contrast to his free-spirited lieutenant, Rangiku Matsumoto. Despite their personality differences, he and Rangiku seem very close as she is willing to follow Hitsugaya's orders through-and-through for important assignments out on the field. Hitsugaya is also easily annoyed by others goofing off or drawing unneeded attention to themselves, such as when he leads a team of Shinigami into Ichigo Kurosaki's school.  Hitsugaya is usually joked about