Lassen

The illegitimate Duke of Mil Seii. He wants to rule Pheliosta, and killing Ishtar is part of his plan. His holy magic abilities and his years of studying poisons have made him one of the most powerful members of Phelios' bloodline. It's rumored that he poisoned his own parents. He despises Duzell and is in love with a sorcerer known as Lailis because Lailis was the only one who showed him kindness in his youth. (Source: Wikipedia)