Bethesda got into a bit of a mix-up recently when an artist spotted his work in Fallout 76's Atomic Shop, attached to the Fourth of July-themed Flag Waving Bundle. That's not a problem by itself until you realise that he didn't sanction it.
The artist in question is Zack Finfrock, the creator behind Fallout: Nuka Break, a fan film about a former Vault dweller who's searching the eastern California wasteland for an "ice-cold Nuka Cola". But he's also pretty well known for placing Vault Boy in various memes.