Goose, “Captain Marvel” (2019)
Okay, Goose is technically not a cat. Carol Danvers’ orange sidekick is actually a flerken (an alien with massive tentacles hidden inside her mouth), but Goose’s fluffy coat and knack for getting into trouble puts her firmly in the cat category.
Binx, “Hocus Pocus” (1993)
Thackery Binx was just a normal teenage boy in 1693 before he was cursed to live forever in the body of a black cat. But hey, everyone goes through weird phases in their teens.