Hm....I'm going to guess AWESOM-O won't be allowed. That's just Eric Cartman dressed up and pretending to be a robot. I think we can get some South Park in here though....I think Mecha-Streisand would fall under "has a fully robotic body but might have a human soul and used to be human."
C-3PO (Star Wars)
Clank (Ratchet & Clank)
E-102 Gamma (Sonic Adventure)
Mecha-Streisand (South Park)
R2-D2 (Star Wars)
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LETS GO METS