Slade is the thief seen in the game's introduction, stealing the jewels from Ground Seal. As a consequence he ends up a captive of Galam. He meets the party when they get thrown in prison. He confesses to committing the crime, and eventually joins the party after being abused by Sarah.
In battle he is a weak unit that can move relatively far and fast, as such he is apt at taking out enemy units that are low on health. Due to his speed he can often act more frequently than other party members, and enemies.
 Character Growth