Discord is an ancient spirit formed by Lenoren during the creation of the world Artem. Originially, he was a being of order and tasks, appearing and behaving very differently than modern times. He was tasked with maintaining balance and order in Artem and Equestria after its creation. He performed his duty until the foul powers of Chaos entered Existence and encroached on the lord of tasks. The dark powers of Chaos warped his body and his mind, turning him into Discord, master of disharmony and instrument of Chaos.
Under command of the Chaotic being Yorgoth, Discord and Grandmaster Eliphas, the corrupted Alicorn Grandmaster, led the Hundred Years War offensive against the Loyalist Alicorns under command of Pelenal the Vigilant. After the war's conclusion, when Chaos' monstrosities were defeated, Discord fled and began wandering Artem to spread his madness, chaos, and general mischief everywhere he went. He is an enemy of Princess Celestia, whom he believes is too "tense". Though Discord is one of Chaos' only surviving agents, he generally does not seek world domination. He is mostly harmless, posing no serious threat to Equestria at the present time. Nevertheless, he is a presence that Celestia would prefer contained lest he choose to step up his antics.
Discord has a generally neutral affilation in worldy conflicts, sometimes helping evil and other times good. He has even helped Blue Team on more than one occasion. In fact, he helped cause the destruction of the Mythic Dawn, helping to end one of the most destructive wars of Earth's history.