Nandetchi (なんでっち Nandetchi) is a male adult character that debuted in the anime Tamagotchi! Yume Kira Dream. On the virtual pets, he debuted on the Tamagotchi P's in Japan, and on the Tamagotchi Friends internationally as a guest character.
Nandetchi is blue, and has a little point on his head, similar to Gozarutchi's. He wears blue overalls, and glasses.
Nandetchi is a very curious and inquisitive Tamagotchi, and asks lots of questions, most often asking "Why?". He ends sentences with "detchi", which is part of his name.
On Virtual Pets
Nandetchi is one possible character that can appear when visiting the park.
Nandetchi can be downloaded to the toy via the mobile app.
In the Anime
Nandetchi goes to Dream School, and is in Robot Class, with Mametchi, Himespetchi and Hoshigarutchi. He admires his classmate Righttchi. He told Mametchi that Righttchi was the greatest teacher on the planet, even though he is just a student. He calls him "Righttchi-San". He's also a member of Rainboys, where he plays bass for the band.
Nandetchi is currently the only Tamagotchi who knows about Yumemitchi's and Kiraritchi's transformations with the Yume Kira Bags. When he told everyone else, they thought it was a joke and Nandetchi was desperate to make everyone believe him. By using various costumes, he kept pretending to be a different person in need of help so he could take a photo of Yumemitchi and Kiraritchi using their Yume Kira Bags. In the end, however, he decided to keep the girls' secret safe and tore up the photos.
In GO-GO Tamagotchi!, he discovers Miraitchi and Clulutchi's Knock Tap. Not knowing what it does, he accidentally sends himself into the prehistoric past. At the end of the episode, he manages to return to the present, but now as a withered old Hobo. However, it is still unknown how he revert back to his younger self in the next episode.
Nande (なんで) translates to why.