Rat Fink is a cartoon character created by artist Ed "Big Daddy" Roth in the 1960s. Known for his wild, exaggerated features and mischievous personality, Rat Fink became a symbol of the hot rod culture and the custom car movement. He often appears as a green, rat-like creature with bulging eyes and a toothy grin, embodying a rebellious spirit. The character gained popularity through various merchandise, including model kits, t-shirts, and artwork. Rat Fink is often associated with the Kustom Kulture movement, which celebrates custom cars, pinstriping, and lowbrow art. His influence continues to be felt in automotive and pop culture today.