Teddy was raised by his father, who worked as a circus clown for Ringling Bros. and Barnum & Bailey Circus. From 1906, there is a photograph of Teddy, his brother Eddie, and their father all dressed as clowns in front of the circus sign.
Both Teddy and Eddie attended police academy school with the Los Angeles Police Department. They graduated in 1925, and in their graduation photo both brothers are seen wearing clown noses.
In 1938, Teddy, Eddie, and their friend Dolores go into business together and open their own private investigator company named Valiant & Valiant, mostly solving cases for Toons such as Goofy and Huey, Dewey, and Louie. They both enjoyed Toontown, the home of the Toons and thought is was a lot of laughs.
Whilst on case with Eddie, Teddy was murdered by Judge Doom, who dropped a piano on his head from 15 stories up. His brother Eddie bore a grudge against Toons due to this incident. However, after later killing Judge Doom and avenging his brother, Eddie reconciled with the Toons.