My personal favorite is HK-47, I'll be voting for him. Who would've known the best dialogue ever heard in a video game came in a metal package. anolysis: There is a 99% probability the Meatbag's in this tournament all suffer unfortunate blaster accidents in the near future.
I really like Cortana too, I really liked the part she played in the Halo story. Daxter of course, another one I really like, he's crazy in a good way. I liked the Dog in Fable 2, it's the first pet I've had in a game and I really wish other games could implement them somehow. Always liked Luigi over Mario. The Moogles in Final Fantasy are cool too, I still remember meeting the one at the beginning of Final Fantasy III. Always liked Tails over Sonic too, just because he hovered with his tail. Navi, that annoying little [censored], I still liked her in the end. :laugh:
Those are really the only ones I've had much experience with and liked.