It's Green Mario!
Nintendo has shared Episode 8 of their Play Nintendo “Characters” series which is all about good old Luigi. This video covers Mario’s cowardly brother in green and some of the games he’s featured in on Switch. There are also five Boos hidden throughout the video - see if you can find them all!
Meet Luigi, Mario’s brother and fellow hero. He sometimes goes on adventures with his friends Princess Peach, Toad, and—of course–Mario. Watch him in action in the Super Mario 3D World + Bowser’s Fury game, hit the track in the Mario Kart 8 Deluxe game, play minigames in the Mario Party Superstars game, and compete in the Mario Strikers: Battle League game. He’s pretty courageous, too: in the Luigi’s Mansion 3 game, he tries to save his friends, even though he’s afraid of ghosts! Luigi is one hero you don’t want to underestimate.