Kensei Muguruma (六車 拳西, Muguruma Kensei) is the captain of the 9th Division in the Gotei 13. His lieutenants are Shūhei Hisagi and Mashiro Kuna. He is a Visored. He was also a captain over 100 years ago prior to his exile, and was reinstated to his old post some time after the battle against Sōsuke Aizen.

Kensei is a tall, muscular man with sharp features, short light-gray/silver hair and brown eyes. He has a tattoo of the number “69” on his chest; the “6” represents his last name, “Muguruma,” which uses the kanji for “6” in it, while the “9” represents the 9th Division, which he currently leads. He wears a dark purple A-shirt with a white trim, in addition to green cargo pants, black combat boots, and a pair of orange fingerless gloves. He also has a series of piercings, with one on his left eyebrow and three on his left ear.