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The following is a list of characters from Camelot Software Planning's Golden Sun series of console role-playing game, consisting of 2001's Golden Sun for Game Boy Advance and its 2003 Game Boy Advance follow-up, Golden Sun: The Lost Age, which deals with the efforts of opposing groups of magic-wielding warriors concerning the restoration of the omnipotent force of Alchemy to the fictional world of Weyard. Classified as Adepts of Weyard's four base elements of Earth, Fire, Wind, and Water, these characters possess the ability to employ a chi-like form of magic named Psynergy. Adepts among the common populace are few and far between the settlements of the game's world. The game's characters were created and illustrated by Camelot's Shin Yamanouchi.

is the 17-year-old protagonist of the first Golden Sun and may be considered the main character of the Golden Sun series as a whole. Isaac is classified in-game as a Venus Adept, which means he is an individual with the ability to manipulate earth-based forces such as ground and plants through a sorcerous craft called Psynergy. Isaac is thrust into the role of the world's savior when a group of villainous Adepts led by the pair raids the sacred mountain shrine Mt. Aleph and steals from it the elemental jewels necessary to break a seal and unleash the force of Alchemy upon the world of Weyard; he is divinely tasked by the seal's guardian, , to pursue Saturos and Menardi across the world and thwart their objective. In Golden Sun, the player controls Isaac as he makes a valiant cross-continental attempt to fulfill his goal, and Isaac is even able to slay Saturos and Menardi in combat at the game's finale, but he must continue to seek out and defeat the remaining members of the antagonistic group as the game's ends. During the game, Isaac plays the role of the silent protagonist, as he never speaks.

Isaac's continued effort through Golden Sun: The Lost Age to prevent the restoration of Alchemy sees his group locked in mortal combat with , warriors bent on avenging the deaths of their clanmates Saturos and Menardi, but the game's new playable protagonist saves him. Afterwards, Isaac learns startling truths about Alchemy from Felix about how it is actually necessary for the world to survive, so he makes the decision to defy the Wise One's command and join Felix in restoring Alchemy to Weyard. Isaac and Felix are confronted by the Wise One himself at the game's finale, and the Wise One puts them through an incredible test of emotion and willpower via a battle with a great dragon before they can break the seal. By the game's end, Isaac and Felix's combined party of Adepts has proven itself capable of ensuring that throughout the world the newly released force of Alchemy is not abused. In the game's final scene, he is shown with his mother and father, together for the first time in three years.

Isaac is an unlockable "Assist Trophy" character in the Nintendo fighting game Super Smash Bros. Brawl. When he is summoned during battle by an Assist Trophy item, Isaac conjures a large hand three times in succession by using his 'Move' psynergy to shove the player's opponents off the stage. Should enemies attempt to evade, Isaac will turn in sync to attack a selected opponent.

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