Mr. Frumble is a pig who often loses and chases his hat. He drives a pickle-car and is prone to vehicular accidents. He is somewhat clueless, but is a nice pig. Characters added in May 1971.

He makes a cameo in the introduction segment (with his hat on) from the first video Richard Scarry's Best ABC Video Ever. His second video appearance is Richard Scarry's Best Counting Video Ever. He makes a cameo again in two songs Shapes (with no hat on) and Head, Shoulders, Knees and Toes (with his hat on) from the third or fourth video Richard Scarry's Best Learning Songs Video Ever. He also appears in The Busy World of Richard Scarry and Busytown Mysteries.