Although Mickey Mouse entered the public domain in 2024, the character, like all major Disney characters, remains trademarked. The trademark lasts in perpetuity, as long as it continues to be used commercially by its owner. So, whether or not a particular Disney cartoon goes into the public domain, the characters themselves may not be used as trademarks without authorization.
The latter could constitute fraud, but instead let’s say instead of a dude in his garage it was a company that made generics?
What if the company openly said they weren’t selling you actually Disney-approved stuff, but your friends don’t have to know that?