Well, I guess that even decades later, the cartoon is still immensely popular in Brazil of all places (and the characters are very well known). I'm not sure why, but it just is. It does make me wonder if Brazilians play the actual roleplaying game enmasse, but I'll probably never know the answer to that. The popularity of the 1980's show is so big that there's a car commercial featuring the characters from the cartoon, and it shows how they get back to Earth. It's a live-action commercial, and it's in Portuguese (the native language of Brazil), and for what it's worth, I thought it looked kind of expensive with some pretty impressive special effects. You see Tiamat (the five-headed dragon), Venger, and Dungeon Master all show up (the last one in the getaway car that sends these five kids all back home). The actors playing the parts of the kids are good stand-ins for the actual cartoon characters.
Anyway, I'll link the video below. If you have the time (and remember this cartoon), it's honestly worth a watch. Also, you can find the 27 complete episodes of all three seasons streaming on YouTube (and you don't even need YouTube Red to watch them).