Sometimes, even the Heroes need someone who's willing to play a little dirty. that's where Captain Jack Sparrow comes in. There are many powerful artifacts around the world that could be devastating in the hands of the Friends,
And Jack is the world's best treasure hunter. Jack still technically owes a debt to the Friends through Davy jones, so Zeus gave him a charm that will protect him from them in exchange for his service. He's an occasional ally, and spends most of his time treasure hunting for his own purposes. He is usually teamed up with Aladdin, another expert treasure hunter, to keep him on mission.