Calahan was the barker at Col. Lane's Mammoth Circus, which he joined along with his roommates Tiny the strongman, Lena the fat lady, and Major Midge the midget.
Although perhaps not a superhero in the accepted sense, the two-fisted Calahan was extremely protective of the business and would always investigate any source of unrest that disturbed his friends and coworkers, usually criminal in origin.
- Diplomacy: Persuasive salesman.
- Skilled brawler.
- 20 Appearances of Clarence Calahan (Quality Universe)
- 1 Images featuring Clarence Calahan (Quality Universe)
- 1 Quotations by or about Clarence Calahan (Quality Universe)
- Character Gallery: Clarence Calahan (Quality Universe)