Thanks to the Random Talking Bush, the world now knows of the newest unlockable costume in Super Mario Maker. It’s the Fighter Fly from the original Mario Bros game (the one in the sewers where you have to run and kick turtles). You apparently get it after defeating the Hard Mode (in the update released today) of Gnat Attack. We cannot confirm this just yet, but it seems that this is the only costume you get in the update today. Seems only right that Nintendo gives us a bug costume for beating a game where you kill bugs. As some may already know, you can obtain the Mario Builder costume for beating the first version of Gnat attack.