Since SpriteSpot is going to be a movie, I figure you deserve to know who's in it so far.

Kirby
Crono (Chrono Trigger)
Master Chief (Halo)
Sonic
Amy Rose
Link (Young and Old)
Navi (Ocarina of Time)

And some characters that are going to be in:
Mario, Luigi, Peach, Bowser ETC.
Shadow the Hedgehog:|
More Chrono Trigger Characters
Solid Snake
Kingdom Hearts People (That means axel:)
More Zelda Figures
Samus and Metroids
Megaman
Maybe some Naruto characters (Gaara Rules)
Some Pokemon and/or trainers
Pac-man
Ryu Hayabusa (Ninja Gaiden)

Feel free to send suggestions of ideas or characters, and I'll gladly put them in SpriteSpot if it's good.