I can answer all three of these!
Ness was chosen as the main character because he had a lot of potential to push forward the concept of the movie. While many of the other Nintendo characters have gotten their time to shine, Ness has only ever had one game that was, sadly, a flop when it first released. So we felt it would help take the story in really interesting places if we explored the possibilities of him being a forgotten hero thrust into an adventure where he learns his strengths through the characters he teams up with.
For the four VA’s, I can confirm who’s voicing the following characters:
- Hayley Nelson - Espeon (Pokemon series)
- Nicholas Parker - Captain Olimar (Pikmin series)
- Reagan Murdock - Greninja (Pokemon series)
- Sheila M. Gagne - Rosalina (Mario series)
As for who the other five heroes are, four of them are the ones I just revealed! The last remaining hero that joins Ness on his adventure is none other than Kirby!