Jaqen H'ghar would enter as one of the most obscure warriors, and even by the time he left the fight, we wouldn't learn a lot about him. He would simply appear, speak in hushed tones and occasionally a body would just turn up on the ring floor. He's clearly got some power, but he operates best in stealth mode as opposed to a group brawl. Method Of Elimination: It wouldn't take a lot to kill Jaqen H'ghar...in his original form. He'd be stabbed without any retaliation and resurface in Braavos alive and well after the fight with a few more faces for his perfectly legitimate gild of face-thieving assassins that nobody seems to care less about.
17. Ned 'Bean' Stark
Ned Stark was a valiant, noble man. He'd abide completely by his rule of passing sentences and swinging the sword rather than handing his deeds off to others to avoid getting blood on his hands. He's clearly proven to be a phenomenal warrior but there's one fatal gap in his armour. Method Of Elimination: Ned would uncover his true identity. Lord Stark lived his entire life believing that he was exactly that, a noble Northern Lord charged with controlling Winterfell when in reality, he was nothing more than a Sean Bean character. Naturally, within seconds of the discovery he would be hastily executed charged with 'being Sean Bean'.