Jose Yenque is a veteran actor. He guest-starred on the Lost episode "Ab Aeterno" as the doctor killed by Richard many years ago.

Nestor Carbonell was amazing in the Richard-centric episode of Lost. We learned a great deal about the character of Richard.

Ready for a look into Richard's past? The 3/23/10 episode will reveal it.

Lost fans haven't seen the actual man in black in a long time. But he'll appear on the episode "Ab Aeterno."

Hello, Jacob! The island king is seen here during the episode "Ab Aeterno."

Creepy! Michael Emerson poses here for a Lost promotional photo for ABC.