Cristo is the Chancellor of Santeem Castle, from where Alena hails. He accompanies Alena in her travels during Chapter 2. He is sick in Mintos in Chapter 5 when the hero first meets him, but quickly recovers when the hero brings him a Padequia Root. He's a good healer, and can use decent weapons and armor, and gains HP more quickly than all of the other magicians. He also gets the most powerful healing magic in the game. You would think, then, that he would be a good member of your party near the end of the game, but, alas, he is not. He's a moron. And a special kind of moron, at that. He tends to use Beat, over and over against Necrosaro...