Burton "Gus" Guster is a fictional character from the television series Psych, portrayed by actor Dulé Hill. He is best friends with the show's main character, Shawn Spencer, and works as a pharmaceutical sales representative. Gus is known for his intelligence, loyalty, and often humorous reactions to Shawn's antics. Gus frequently assists Shawn in solving crimes, using his knowledge and skills to complement Shawn's observational abilities. He is characterized by his love for pop culture, particularly video games and comic books, which often influences the show's comedic elements and plotlines.