Alternate costumes(not color changes)

[Doodle]

Luigi has Waluigi's colors, so that's a start. :P

Mario - Dr. Mario
Luigi - Mr. L (don't know where he came from, but he looks cool. :P)
Link - OoT Link, Classic Link (like what Toon Link has)
Peach - Daisy, and not just a recolor!
Samus - Some other suits.
Fox - James McCloud
Pikachu - Pichu or Raichu
Yoshi - Boshi