Mr. B


Mr. B full manga

Personal statistics
Name Mr. B
Gender Male (Body)
Status Deceased
Species Parasite
Eye Blue
Hair Blond (Anime)
Brown (Manga)
Series statistics
Anime debut Episode 2
Manga debut Chapter 3
Seiyuu Tōru Nara
English Voice Mike Yager
Image Gallery

Mr. B is a nameless parasite who confronts Shinichi. He is a minor antagonist.


Mr. B has shaggy blond hair and was seen wearing a purple vested jacket. In the manga, Mr. B appeared to have blond and black hair, his face is much more serious and pointed. He is also more muscular and tough looking, giving him the appearance of a punk. His appearance in the anime, however, is the opposite. He has black paint or markings around his eyes and wore a black sleeveless shirt and jeans.


Being a Parasite Mr. B believed humans to be the lower species. Though Migi had failed to take complete control over his host, he held no ill will towards him. He offered Migi multiple chances to join him, in hopes of prolonging their life.


Mr. B is first seen noticing the presence of another parasite from a distance, he then begins pursuit. After catching up to Shinichi, he is surprised that Migi failed to take control of the brain. He offers Migi the choice of joining him, of which Migi is distrustful. He then cuts off his own right hand, offering Migi to join forces with him, claiming that together, they can share a host and live at least 140 years. Due to blood loss, and Migi still undecided in leaving his current host, he attacks Shinichi in hopes of forcing Migi to relocate. However, in that moment, Migi slices him in three. Mr. B is seen distraught at seeing his body cut up and dies.

Abilities & Powers

As a parasite, Mr. B has the basic abilities to shapeshift his head, and maximize the physical potential of the body he's controlling. He can harden the cells in his body for offensive and defensive purposes.

He had knowledge of parasite physiology, and how merging with anothers parasites host would work. It's unknown if he learned this by trial and error or if he was involved with Reiko's experiments in some way.


His name is displayed as B on the official anime website.