Martin Olson (born April 2, 1956; age 65) is a SpongeBob SquarePants crew member who played The Chief in the episodes "Mermaid Man and Barnacle Boy V" and "Swamp Mates." He also sings the song You're Old on the radio in "Mid-Life Crustacean."
He has appeared in several movies. As far as animated television shows go, his most famous role is Hunson Abadeer in Adventure Time. For Rocko's Modern Life, Olson was one of the original staff writers through all four seasons and also co-wrote the story for the 2019 revival special Rocko's Modern Life: Static Cling. He is also the father of Olivia Olson, who plays roles in animated television shows, but also sings professionally. He got married to Kay Furtado in 1981.