Yui

Dr. Yui is a scientist who examined the body of Hideo Shimada. He deduced that if you can pluck a single hair from anywhere on a person's body, you can tell if said person is a Parasite.

Appearance
Yui is an older grey-haired man. He was seen wearing business suits in the meeting about Shimada's autopsy.

Personality
He was excited at the prospect of getting a chance to dissect a parasite's corpse. He was also more than happy to oversee the meeting about parasites and discuss his findings, though he assumes the men there have more knowledge on related biology than they actually do.

Plot
Yui is first seen being contacted by phone from Police Chief Takizawa. He's informed about the current situation involving Hideo, and is excited at the prospect of having a sample to study and says he'll begin heading to their location.

Trivia

 * He appears in a short story in the Neo Parasyte M series.