One of the strongest Meisters at DWMA. He has a screw through his head, white hair, and stitches on his left cheek. He wears a white lab coat covered in stitches and is a heavy smoker. He is somewhat sly. When he meets an interesting person, his first thought is "I want to dissect them." He makes jokes quite often, but they are usually beyond the understanding of ordinary people. His true nature is that of a sadistic hedonist. He is a bizarre human with a screw embedded in his head and stitched scars on his face. The screw on his head isn't just decoration; it actually turns when twisted. His clothes are also covered in stitched marks. Aside from these aspects, he is a normally handsome man. He is somewhat sly. When he meets an interesting person, his first thought is "I want to dissect them." He makes jokes quite often, but they are usually beyond the understanding of ordinary people. He doesn't show much emotional expression. He plays a lot of pranks. He sometimes rides around on his lab chair, tripping over the threshold every time he enters a room. He has a habit of turning the screw at his temple (he does this to focus or when he's anxious; it's a way of organizing himself). It's clear he was a natural-born psychopath since childhood.

One of the Death Scythes, a woman in her mid-20s with a petite build. She used to be uninterested in work and lacked a sense of responsibility regarding her position as a Death Scythe. Her dream was to get married and retire early... However, according to Stein, she is the type to get fired up without even realizing it. She has terrible luck with men and failed repeatedly, even declaring she would marry a toilet at one point, but she is now married to Stein. She wears an eyepatch with a yellow lightning bolt pattern over her left eye. A healing wavelength is hidden within that eye. Using a technique called 'Izuna,' she can use electric currents to stimulate a Meister's muscles, explosively increasing their physical abilities. However, the drawback is that the strain on the Meister is so great that it cannot be used for long. The disadvantage is that the burden on the Meister increases significantly, preventing long-term use. As an unconventional method, she can also be thrown like a boomerang in her hammer (tonfa) form to hit enemies. In the final battle against the Kishin, Stein, who was on the ground, received help from a witch to strike the Kishin from a very long distance. She is playful and kind. She has a severe lack of sense of direction...