Crispin Mulcahy is a miniature man that was turned into a lamp in "The Story of Crispin". He is voiced by Michael Dorn.
Crispin Mulcahy appears to be a very miniature tiny muscular man with blond hair and a green speedo.
As a lamp, Crispin is incased in gold with a yellow lampshade placed on top of him to match the RV's feng shui.
Crispin is a kind hearted man who always tries his hardest to succeed at doing the many tasks he wants to accomplish in life due to his very small height. He cares about his friends as he helped Uncle Grandpa get a mouse trap off his toe after Uncle Grandpa tried to defend Crispin from being bullied by G-Dog and the Huge Librarian. Crispin also believes that violence isn't always the answer as he tried to stop Uncle Grandpa from fly swatting the two guys. He thanked Uncle Grandpa for his selfless bravery in the face of peril to defend their friendship, and decided to retire from the strong man competition and become an ornamental mantelpiece forever.
- Crispin's first major role in a episode was in Uncle Grandpa Runs for President.