"Dr. Fetus" is a fictional character from the animated television series The Venture Bros.. He is depicted as a small fetus in a jar, often seen wearing a lab coat and glasses. Despite his size, he is portrayed as a highly intelligent and manipulative figure, often involved in various schemes and plots against the show's protagonists. The character is known for his humorous and absurd personality, which adds a unique element to the series. His interactions with other characters, including Rusty Venture and Brock Samson, often lead to comedic situations, showcasing the show's blend of dark humor and satire.