While he seems to be close to Aiden and they have each other's trust, the two seem to have a love-hate relationship; as Aiden notes, "We don't hang out, because we'd kill each other." Jordi, on the other hand, says Aiden has no art, "Much like this shit-show" (DeMarco's art charity).
Jordi is the leader of a gang called the Fixers.
He also may be a gun dealer because he is seen passing off a gun to Aiden Pearce that he uses to kill Joseph Demarco. He apparently dislikes DeMarco, viewing his art as a "shit-show" when Pearce informs him of his plans Jordi gives him the pistol for free and tells Aiden to consider it a donation.