Link is a normal Hylian in most games that through Heroic events slowly becomes a hero and usually gains the Triforce of Courage along the way. He reigns from peaceful villages from the likes of the Kokiri Forest, and Ordon Village and possesses a variety of different weapons. His primary weapon of choice are swords and shields, though his best known and most often acquired sword is the Master Sword, also known as the Sword of Evil's Bane.
Link uses these and an assortment of different spells, weapons, and miscellaneous other nick-nacks to finish his quest.
Link is the chosen bearer of the Master Sword, a powerful magical sword that can be used against evil. As a child, he challenges Ganondorf in order to protect Zelda before he inadvertently helps Ganondorf find the Triforce in Ocarina of Time, forcing Link to undo the damage he had caused.
Link helping out the ultima fighting off Ganondorf and involved with the battle of the Safe house.