Propanoplosaurus has basically become popular by being discovered. It has not really gotten into the level of popularity needed to have children's books, toys, games, or anything else of that sort take notice of it. However, it is quite famous in the local area, or was for a little while (perhaps it is not as famous as it was for that short period now in its local area). It is a permanent part of the Smithsonian Dinosaurs in Our Backyard exhibit, as long as that remains a part of the museum, which has its own level of fame. It is also the earliest nodosaur found on the East Coast of the US, which makes it famous for another reason.