Professor Tom.

Tom is a professor, teaching a small gray kitten named Topsy about catching mice. After a bored Topsy falls asleep, Jerry interferes and attempts to convince Topsy that mice are friendly. As punishment, Tom forces Topsy to immediately chase Jerry. Tom then catches Jerry, but is forced to let him go as Topsy makes a screech on the chalkboard. Topsy then shields Jerry from Tom and goes off to teach him that cat and mice like them should be friends, but Tom interrupts.