Oda

Oda is a scientist that assisted Yamagishi in identifying the Parasites.

Appearance
In the anime Oda is an elderly man with grey hair and glasses. He is seen in a white lab coat. In the manga, Oda is much younger with black hair and a wide face. He wore glasses and a white dress shirt.

Personality
Oda was fairly intelligent, having built and operated a machine used to specifically locate parasites. He began to worry when parasites moved strategically to avoid being detected by the machine, and became frantic once it was shot, destroying it.

Plot
Oda was first seen inside a bus waiting orders from Yamagishi.

Trivia

 * In the manga it was simply an x-ray machine, while in the anime it was specifically designed to detect parasite cells.