This ? Panel can be reached from the Toad's Factory start line. Fast travel there, then turn left past the start line to find a Yoshi's Diner selling Yoshi Snacks. Behind it will be a sloped blue wall ...

This ? Panel is on top of the Luigi Tires building, which is among the complex of buildings at the start of Mario Bros. Circuit. Our preferred method of getting here is on the first metal section of ...