Gilbert D. Stern is a federal agent. He and his partner Roslyn Krantz first appeared in Time Keeps Slipping to question Dr. Light. Stern then accuses Dr. Light of helping Dr. Wily escape from the police convoy, and keeps an eye on him in his office while Mega Man searches for Wily and Roll.


Stern and his partner Roslyn Krantz are named after Guildenstern and Rosencrantz from William Shakespeare's work Hamlet.