A blonde Caucasian man in a white lab coat.
Dr. Ryan was the chief scientist at Von Romme's underground uranium processing plant. While escaping with Jonny's grandfather, Jonny Quest and Hadji used mechanical arms (normally used to handling sensitive materials) to knock Ryan unconscious.
Although the base was shortly thereafter destroyed, Ryan managed to escape but was arrested by the police.
Ryan was voiced by Kevin Michael Richardson, credited as "Tech #1."