If you've ever seen a Rat Fink decal or t-shirt, you may be wondering what this peculiar character is all about. Rat Fink is a cartoon creation of the late artist and hot rod enthusiast Ed "Big Daddy" Roth. In the 1950s and 1960s, Roth's Rat Fink character became a popular symbol of the hot rod and custom car culture, and the character's popularity has endured over the years.

Ed Roth was born in Beverly Hills, California in 1932. As a teenager, he became interested in building and customizing cars, and by the 1950s he had established himself as a skilled hot rod builder. Roth also had a talent for drawing, and he began to create his own cartoon characters to use in his designs.

In 1958, Roth created the character of Rat Fink, a grotesque-looking rodent with bulging eyes and sharp teeth. Rat Fink quickly became a popular emblem among hot rod enthusiasts, who identified with the character's rebellious and anti-establishment attitude.

Rat Fink merchandise soon became a hot commodity, and Roth began to sell t-shirts, decals, and other items featuring the character. In addition to Rat Fink, Roth created other characters like Mr. Gasser, the Drag Nut, and the Beatnik Bandit, which all became popular symbols of the hot rod and custom car culture.

In the 1960s, Roth became famous for his custom car designs, which were featured in magazines and car shows across the country. He also created several "show cars," such as the Outlaw and the Mysterion, which became icons of the custom car world.

Roth's influence extended beyond the world of hot rods and custom cars. His unique and irreverent artistic style inspired a generation of artists and designers, and his work has been exhibited in museums and galleries around the world