[Onslaught Six]

Formo owns the trademark outright, which has never been registered before. (It won't let me post links because I'm a new account, but you can search it on the US trademark website yourself.)

Remember, trademarks only cover names, not intellectual property, so there's nothing stopping them from using this name for their toyline.

Whether the designs are infringing on Mattel or not...that's up to them and how much they want to pursue it.

Personally I have no interest in a 5POA line that looks like it was made in the 80s when MOTU Origins style exists. Why can't they make these toys like those instead?