Groton

Groton was a mute, dimwitted homicidal maniac who lived in Venice Beach, California. He was the assistant of a scientist named Doctor Durae who, unknown to Groton, was in fact the last male heir to the legacy of Frankenstein. He lived in Durae's laboratory, which was situated behind a secret panel at Doctor Durae's Creature Emporium on the boardwalk. Durae was attempting to develop a serum that would cure various physical and mental abnormalities through the study of blood. He used an early version of the serum to temporarily keep Groton’s homicidal rages in check. But Durae also required Groton's savage quirks, and would often deny him the serum whenever he needed to rely upon the brute's bloodlust.

In March of 1969, Durae sent Groton to acquire another test subject for his experiments. He would often target his victims based upon the people who would visit his Creature Emporium. Groton came upon a woman named Joanie Fontaine and decapitated her with an ax. He brought both her head and body back to Durae who reattached them and found a way to resurrect her. Afterward, Durae gave Groton another shot of his formula to keep his rage in check.

Later, Durae sent Groton out again to find more victims. He went out to the beaches at Rocky Point where he attacked two lovers named Bob and Laura. After hacking them to pieces, he left Bob’s remains on the beach and brought Laura back to the laboratory.

A few nights later, Durae sent him out again to gather more test subjects. Groton came upon a gang of bikers antagonizing a hippie girl named Samantha with the intention of raping her. He hacked away at them with his ax and brought Samantha back to the laboratory.

Before long, Judith Fontaine, the sister of Groton's first victim, Joanie Fontaine, accompanied her lover Mike Howard to Durae's lab where they learned the truth about the doctor's experiments. After substantial pontificating, Durae ordered Groton to kill them. Judith managed to escape from the lab and Groton gave chase. He pursued her across the rooftop, but the police arrived on the scene and a detective named Sgt. Martin shot Groton to death.