Who is the secret Manhunter in 'Lanterns'? Let's investigate.

HBO's Lanterns just kicked off a Manhunter manhunt. As revealed in the show's second episode, Manhunters are a synthetic race of aliens who are able to build entirely new bodies, disguise themselves as anyone, and embed themselves undetected within any society. Alien Antaan (Paul Ben-Victor) tells Lantern trainee John Stewart (Aaron Pierre) that they're brutal, deceptive, and capable of wiping out entire species, including his own. He and his people lost their world to the last remaining Manhunter. A Green Lantern took that Manhunter into custody and promised he would be executed. Instead, the Manhunter is alive and hiding out in Rushville. Hal Jordan (Kyle Chandler) guesses that his predecessor Abin Sur was the one to bring the Manhunter in, and that the Manhunter wound up killing him. Now, the clock is ticking for Hal and John. They have 48 hours to discover the Manhunter and turn him over to Antaan, or the aliens will destroy all of Rushville. That's not a lot of time to vet the town's entire population, but I've got the sneaking suspicion that we've already met our alien adversary — or at least, we've gotten close. Of the townsfolk we've already met, here are the biggest suspec