Survivor

[Mariner*]

But he is a former special agent for the U.S. Government capable of analyzing everyone there and knowing if they are lying or not.
He also has other special powers that have yet to be revealed and can hypnotize entire groups of people at the drop of a hat.
He has been trained in the art of deception and can really make people believe that he is a total whackjob.
It's all part and parcel of his plan to take over the island.