When i say ep1, that means the character should try to sound like they did in ep1 and it can be used as a reference point.

Ness - vaguely kidlike, ep1
Roy - ep1
Pichu - high pitched, ep1
Jigglypuff -helium, ep1
Luigi - italian, ep1
gaw - hal reader, ep1
Bowser - lite schwarzenegger, ep1
Kirby - ep1
Yoshi - ep1
Zelda - regal & magnanimous
Sheik - same actress as zelda but with bad fake deep voice
Doc - same actor as Mario but talks normally, ep1
Falcon - ep1
Peach - valley girl ditz, ep 1
Marth - 
Falco - 
Fox - 
Popo - 
Nana - copies popo's lines exactly but with a 1/10 second delay