Stein , commonly known as Stein, is considered to be the most powerful meister to ever graduate from the DWMA. He views the world as his own place to experiment, and he constantly forces back urges of insanity that compel him to dissect everything. He loves to experiment, even going so far as to place a giant bolt through his own head, which he occasionally turns while thinking. He is the former partner of Death Scythe "Spirit", who is very wary of Stein due to various experiments performed upon him. He starts to note that he cannot control his sanity after Asura is released, which causes him to hallucinate and act extremely reclusive.