Mouser is a character that appears The Tom and Jerry Comedy Show's episode in Most Wanted Cat. He is voiced by Frank Welker. He is a black cat that hangs out with is buddy Squint and Miss Kitty at her bar,
He makes resembles to Butch. but he wear a hat, a bib, a monocle, a black hat and a bow tie. his cheeks is seen unlike Butch.
Mouser is seen as good buddies with Squint, he is also sneaky cat burglar as he robbed inside the house along with Squint, He sees Tom as a "fancy cat" from the big house on the hill (despite fact he looks and accessories fancier than Tom) he is also a little cautious as he asks Miss Kitty "what's the matter with the with Tom cat".
- Unlike most one-time characters in The Tom and Jerry Comedy Show, He and Squint get the plenty of screen.
- Mouser and Squint never get a proper interaction with Tom.