Charles Widmore
After being shot by Ben Linus (Michael Emerson) in the episode "Dead Is Dead", Desmond Hume (Henry Ian Cusick) awakens to discover that Charles Widmore (Alan Dale) has brought him back to the Island. Desmond attacks Charles, who tells him the Island is not done with him, and that unless Desmond helps him, everyone he loves will be gone forever. He has his team prepare an electro-magnetic test, which kills a team member in the path of the toroids as they set up. Desmond is bound to a chair and locked in with the toroids as the test is run. After Desmond survives the test, he agrees to help Charles. As Charles' team leads him away, they are ambushed by Sayid Jarrah (Naveen Andrews), who takes a willing Desmond away with him.