In order, they were (theoretically) supposed to resemble:
1. Captain Falcon (Flareon for his fiery moves.)
2. Peach (Ditto is... pink...)
3. Sheik (Espeon seems associated with the magic here somehow.)
4. Pit sans wings (hence the necessary Togetic.)
5. Metroid: Other M-style Samus (complete with Wave Beam-y Raichu!)
6. A terrible attempt at Lyn(dis) of Fire Emblem.
7. Mona of the WarioWare games (she does in fact have a monkey)
8. Link and Saria is correct, yes.
9. I see nobody remembers Adeleine? (Or at least reads Brawl in the Family?)
10. SNAAAAAAAAAAAAAAAAAAAAAAAAAAKE
11. Waluigi, of course.