Styx

"If I am a river, then perhaps my friends are the land that supports me. Without them, I would fall to oblivion. ...Or would I?"
Styx is calm, mellow, and hesitant. They can be found in the Ghu Ruins lab at night, along with their Absol, Achilles, and during the day can sometimes be found in the Riverside Cafe, where they will chat with the player and sometimes fight alongside them.

They have 2 variables associated with them, and these can change the game drastically. Styx's relationship level with the player can change not only access to areas, but may cause Styx to give the player items and offer to battle them. The other variable, however, causes Styx to minimize their interactions with the player.

These may or may not have effect in the late-game.