Babbit and Catstello are fictional characters, based on the comedic duo Abbott and Costello, that appeared in Warner Bros. animated cartoons.

[citation needed] In their first three cartoons, Babbit was voiced by Tedd Pierce, and Mel Blanc performed Catstello.

The hapless duo fail in every attempt to capture the bird, establishing the pattern that would be used time and again in future Tweety cartoons.

The final scene shows Catstello eating cheese and reading a book on living alone, before turning to the audience and once again reciting "Oh — I'm a baaaaad boy!"

The pair have mainly made cameos in modern Warner Bros. animated projects, their most major appearance being in "Ice Cat-Pades", a segment of the 1995–2000 series The Sylvester & Tweety Mysteries.