Thalassa Lucas

Thalassa Lucas is the King of Ilusia.

History
The Revolutionary, "Dragon"... His thoughts are dangerous... In 5 or 6 years, he will be a large thorn in the side of the governments of the world. — Thalassa Lucas

He appeared briefly in chapter 142 during the Chopper flashback. He was the bearded, smoking man who showed the photo of Dragon during the Council of Kings 6 years ago in Mariejois. He said that Dragon's thoughts are dangerous and that within 6 more years Dragon would be a great thorn in the World Government's side, a prediction that, ultimately did come to pass. He was only seen in a flashback of 6 years ago. It is unknown if he is still alive and if he still reigns.

Translation and Dub Issues
Thalassa (Θάλασσα) means "sea" and is the name of a Greek sea goddess who personified the Mediterranean.