While Illusion of Gaia has a large cast of characters, Will, Freedan and Shadow are the only playable characters in the game. They each have unique abilities, and certain areas are impassable without a specific character. The characters gain techniques as part of the story. Will's techniques are all based on reaching new areas with incidental combat applications, while Freedan's techniques are more combat-oriented. Shadow arrives late in the game, but being such a powerful character, he causes Freedan to be nearly obsolete.