Universe: EarthBound (Mother)
Debut: EarthBound (1994)
Species: Human and Pokemon
Availability: Starting fighter
Background: Ness was introduced to the U.S. in 1994 in EarthBound (though in Japan it was actually a sequel to the game Mother, making the game actually Mother 2 there). Ness is a boy with psychic (PSI) powers who battles an alien force to protect his homeland of Onett. In the original game, the protagonist was named Ninten but looked like and had the same powers as Ness in EarthBound. Also, Ninten was 12 years of age and Ness was 13. It leads me to believe the characters are one in the same.
Reasoning: Ness has been in SSB since the first installment of the series.
Probability: I would bet my left arm that he will make it.
Thoughts: Ness is the man, even if he is a little boy.