This app was mentioned in 3 comments, with an average of 3.67 upvotes
It's a game by A+E/History channel, so I suspect he got royalties:
https://play.google.com/store/apps/details?id=air.com.aetn.history.AncientAliens
No, wait, scratch that. To be on the show, he probably signed a waiver that allows them to use his image any way they want. Nobody thought the clause was important until the show did well enough to warrant a game and he became internet famous.
https://play.google.com/store/apps/details?id=air.com.aetn.history.AncientAliens
Literally called 'Ancient Aliens: The Game.' sorry, should've linked originally...