Butch (voiced by Frank Graham in Springtime for Thomas and Trap Happy (both 1946), Jerry Mann in Casanova Cat (1951), Stan Freberg in Baby Butch (1954) and Daws Butler in Smarty Cat (1955); by Nicky Jam in the 2021 film) is a black alley cat who made his first appearance in the Tom and Jerry series in the short Baby Puss (1943), alongside Topsy and the already-established Meathead.

An alley cat is foraging for food when he sees Tom's house and decides it's a rich haul. He dresses as a foundling baby and lands on the doorstep. Tom takes him in and Butch proceeds to raid the fridge between Tom's babying him. What he doesn't know is that Jerry's going to grab the ham Butch swiped every chance he gets.