Filburt is a character from the animated television series Rocko's Modern Life. He is a blue turtle who is known for his neurotic personality and his tendency to worry about various situations. Filburt often serves as a comic relief character, providing humor through his anxious behavior and quirky remarks. In the show, Filburt is best friends with Rocko and Heffer Wolfe. He works as an eye doctor and frequently finds himself in absurd scenarios that highlight his insecurities. Despite his anxious nature, Filburt is a loyal friend and often joins Rocko and Heffer on their adventures in the quirky world they inhabit.