Jack Atlas is a playable Legendary Duelist in Yu-Gi-Oh! Duel Links who appears in Duel World (5D's). He cannot currently be unlocked, only appearing as an opponent. This is a video game depiction of Jack Atlas, a character from the Yu-Gi-Oh! 5D's anime.
White Gate Keys are required to Duel him at the Gate.
He appears in-game after the player reaches Stage 6 of Duel World (5D), at which point his Character Unlock Missions become available. Prior to May 10, 2019, he could only be unlocked during his event, Atlas Rising: The Return of Jack Atlas. Prior to that, he appeared during special events as a Roaming Duelist.