Luigi hint art

From SMO.wiki

From March 14, 2018, to November 28, 2018, following the version 1.2.0 update, Nintendo posted new Hint Art on social media. If Mario ground-pounds at the correct spot as described in these pictures, instead of a Power Moon, a Pixel Luigi pops out of the ground and grants Mario 200 coins. It uses colors that match Luigi's modern design, instead of the colors of the original sprite from Super Mario Bros. If Mario reveals a hidden Pixel Luigi he previously discovered, he receives ten coins instead. These pieces of Hint Art are based on the unused Hint Art found in the game's files.

To celebrate Captain Toad: Treasure Tracker releasing on the Nintendo Switch and Nintendo 3DS, the Pixel Luigi in all kingdoms was replaced by a Pixel Captain Toad with the same effect until August 8, 2018. However, even after this date, the Pixel Captain Toads remain in place of Pixel Luigis in the Snow Kingdom and Ruined Kingdom, as those 8-bit characters were added while the Captain Toad event was still on-going.