Hopefully they'll see it in good fun. The character's aren't doing anything unusual or nasty, though I do have a semi-original recurring character with a very subtle evil streak. It's so subtle that the target audience won't spot it until they grow up.

As far as I understand it, the vast majority of copyright disputes on YouTube seem to end with the deletion of the video. And there are far worse videos featuring copyrighted characters which are targeted at young children, feature mature themes and these are frequently monetised. These videos are only recently being flagged and taken down en-masse, but if mine gets taken down in the crossfire I'll understand.

In the meantime, if it makes a few people laugh, it'll have done its job.