It got Ratchet from Ratchet and Clank, Crash Bandicoot, Alucard, a bionicle, Oscar from the movie Shark Tale, Mordecai from Borderlands, Spongebob, it guessed itself, Tuvia Bielski (The main character from Defiance, also an actual person), Aldo Raine from Inglorious Basterds, Christopher, the main prawn in District 9, Sherlock Holmes, and, I shit you not, Omi from Xiaolin Showdown.
I put in Dan Cahill from The 39 Clues and it didn't get that, but that's the only one it didn't know. I used the other main character, Amy, and it couldn't get that either. It says it knows the character, so I must have answered something incorrectly. Whatever, though. I beat it.
Edit: Fucking hell! It got Arthur Dent, Ford Prefect, Zaphod Beeblebrox, Trillian, and even freaking Marvin! That's ridiculous!