Dark Link

Dark Link (or Shadow Link)is an alternet version of Link. He made his first appearance in Zelda II: The Adventure of Link. However, according to the timeline of the game, he was created in the Water Temple in The Legend of Zelda: Ocarina of Time by Ganon when Link is tricked into striking his own shadow with the Master Sword.

Dark Link was made to combat Hero of Time being everything that Link is not and everything that he is at the same time. He holds the skills of the hero but instead of all things good, he is bad. He is filled with evil and a need to destroy the hero and the line of the hero. Dark Link in Zelda II: The Adventure of Link is the same person as the one in The Legend of Zelda: Ocarina of Time, but the Link is different. Unlike Dark Link, Link is not immortal and eventually dies. But every few hundred years a new Link in the bloodline of the hero of time is born and must eventually face off with Dark Link.

In Four Swords Adventures, Dark Link yet again makes an apearance; this time by the name Shadow Link. He proves to be quite persistent, and is featured as a mini-boss several times before he is finally felled.

Dark Link also makes an appearance in  Super Smash Bros. Melee in Event mode, where once again, Link must defeat him, but this time around, Dark Link doesn't counter every attack you make.