Matthew

Matthew is the main playable character of Golden Sun: Dark Dawn. He is the son of Isaac and a Venus Adept himself. He was first revealed for the game alongside his party members Karis and Tyrell.

As a playable character
It is evident from trailers that he is the main character the player controls in the overworld of Dark Dawn and appears in battles, and he uses a similar collection of Psynergy as Isaac did in Golden Sun, indicating his element as a Venus Adept. The E3 2010 floor demo footage showing him in battle shows him using a thorned plant Psynergy that looks like a 3D rendition of the Thorn Psynergy series. Based on retrospective logic, the Move Psynergy that is seen being used in trailer belongs to him as it had to his father.

In the demo battle mode at the E3 2010 floor demo, Matthew has the Venus Djinn Flint and Steel Set onto him, and his Psynergy consists of Ragnarok, Quake and Earthquake, Spire, Cure and Cure Well, and Growth.

Biography
As the son of the previous games' Isaac, he has a nearly identical appearance and the same yellow scarf (apparently it has been passed down by his father). In the E3 2010 trailer, he and Karis are seen at a town watching a Psynergy Vortex pulsating in the vicinity. Screenshots show another blond-haired adult in a blue trench coat, and one of them shows him specifically addressing Matthew.

In one scene at a floor demo in E3 2010, a Mercury Djinni addresses Matthew as "a Warrior of Vale", which may carry interesting implications, as Vale had been annihilated at the end of The Lost Age thirty years before.