This version of Toad is part of a wider crossover between multiple worlds.

Toad: "Hey-ho! I'm a Toad! We're here to help save the worlds! We're from the treasure trackers, sent by Captain Toad. So we're really good at finding stuff!"

Toadette: "Mhm! Don't forget about me! I'll be by Toad's side if he needs me."