|First Appearance||Tales of Destiny|
|Other Appearances|| Tales of Destiny 2 |
Tales of the World: Radiant Mythology
Tales of the World: Radiant Mythology 2
Tales of the World: Radiant Mythology 3
 Character History
At the young age of 16, Leon is a sword prodigy. Leon is a rather close acquaintance of Hugo Gilchrist, the leader of the powerful Oberon Company. Leon is a very complex and brooding character. He does not like to show his true feelings. At the beginning, the only person Leon seems to be close to is Marian, a maid at his manner. His real name however is Emilio Katrea. Rutee Katrea's long lost little brother. In battle, Leon has powerful spells and strong physical attacks, making him one of the stronger characters in Tales of Destiny.
 Tales of Destiny 2
ATTENTION! THIS SECTION CONTAINS VERY BIG SPOILERS FOR THE 1ST AND 2ND GAMES. STOP READING IF YOU CARE!!
Part way through Tales of Destiny, Leon betrays the group and dies to help them escape. Fortuna saw fit to give him back his life. Leon was reborn with no name. When he sees Kyle Dunamis and Loni Dunamis in trouble, he steps in to help them. When asked what his name is, Leon replies that he has none. Kyle decides to call him Judas, a fitting name. Since Kyle fixes the timeline at the end of the game, I'm pretty sure that he goes back to being dead. Not totally sure for that one.