Blue Chosen Toad
The blue Chosen Toad first seen getting ready to set sail for parts unknown in order to find his true calling, vowing to sail to the ends of the planet to do so. However, when Mario and Huey manage to get the Yellow Mini Paint Star and returning to the beach, the blue Toad is found shipwrecked, far away from the beach and embarrassed about his failure, hanging onto some flotsam from his ship. Mario then uses his cutout ability and the Fan to produce to a giant wave. At first, it seems to swallow the blue Toad whole, but when the wave rises the Toad is surfing it with the greatest of ease and it is here that he awakens as a Chosen Toad.
As the Toad is talking about his legend as the greatest surfer, Mario, Huey, and the other Toads notice the incoming tidal wave which the Toad manages to stop with his superpowers. After Huey mentions the Crimson Tower's gate, the blue Toad finally realizes his true destiny as one of the Chosen Toads and heads off to the Crimson Tower's gate.
Even after gathering the three Chosen Toads together, it turns out the job is not quite done yet. In order to open the gate, Mario needs to hammer them into their keyholes. After Mario does this, the gate opens and it appears that they are gone. However, this is not so; they are still alive and are able to communicate through the small holes on the gate. They then encourage Mario to go after the Red Big Paint Star. They're seen again at the Port Prisma festival after Mario defeats Morton Koopa Jr. and reacquires the red Big Paint Star, and once more after the defeat of Black Bowser at the Port Prisma celebration.