Hiyori Sarugaki was once a lieutenant in the 12th Division under Kirio Hikifune and Kisuke Urahara. She saw Hikifune as her mother figure, which made it difficult for her to accept Urahara as her replacement. Despite being small, blonde-haired, and having a fierce temper, Hiyori was known for her violent tendencies. Her hair was styled in pigtails, she wore a red jogging outfit with the first kanji of her name (猿 saru), and had a fang on the left side of her mouth. She often mistreated Shinji Hirako, even though he outranked her at the time. It took Hiyori longer than any other current Visored to defeat her inner hollow, taking 69 minutes and 2 seconds. Her zanpakutō was standard in appearance with a decorated tsuba featuring small hearts, while she wore it from her right shoulder like Ichigo. Her hollow mask resembled that of a normal hollow mask with a large horn and pink stripes on top.