The First Appearance Of Shy Guys Was Actually Not In A Mario Game

"The iconic Shy Guys from the Mario franchise have been in a ton of games over the years. They are up there with Goombas, Chain Chomps, Boos, and Koopa Troopas in terms of always being around in the games. However, what makes Shy Guys special is that they originally did not appear in a Mario game. Instead, they actually came from a Japanese-only video game called Doki Doki Panic." - click image for article