Rokume

Rokume is a minor character in Beastars. She is the one and only security guard of Cherryton Academy.

Rokume has a very hesitant demeanor and, because she is always hidden, she does not usually socialize with anyone at all. Rokume is also easily excitable (especially with Legoshi's actions). Although she declared to be envious of Legoshi since according to her, she was born with the shame of having no limbs and only by hiding can she bear it.

(Source: Beastars Fandom Wiki)