Oda

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.

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.