Brook

Mira Nygus

ミーラ=ナイグス
Replaces Medusa as the school's interim doctor. She is Sid's partner, and looks like a mummy due to the fact she is covered in bandages (although she is seen without the bandages). She becomes a combat knife in weapon form. Her last name is a pun on how the word "knives" is pronounced. (Source: Wikipedia)