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→Biography
5,000 years ago, Life Stream served the Crimson Dragon and fought alongside him and the Signer Dragons in the ancient battle against the [[Earthbound Immortals]]. However for an unknown reason, Life Stream Dragon was not present on the battle against [[Red Nova]], and instead "[[Black-Winged Dragon]]" was.
To date, only "[[Power Tool Dragon]]" which belongs to [[Leo]], appears to be a was the true mechanized version of Life Stream Dragon. Leo mistakenly believed "Power Tool Dragon" to be the (then) Fifth Dragon and believed himself to be the Fifth Signer after asking [[Luna]] if "Power Tool Dragon" took part in the ancient battle between the [[Signer Dragons]] and the [[Earthbound Immortals]]. Luna replied that maybe it did, but only just to make him happy; she didn't think it was the same Dragon, since such a high-tech robotic dragon couldn't have taken part in the ancient battle.
Finally [[Yu-Gi-Oh! 5D's - Episode 142]], in the three-on-one duel against [[Aporia]], Life Stream Dragon finally appeared after Leo awakens as the Sixth Signer. This as Leo asked Crimson Dragon to lend him its power to protect Luna. He then tuned "[[Power Tool Dragon]]" with "[[Morphtronic Lighton]]" to Synchro Summon "[[Life Stream Dragon]]". On the Synchro Summon proccess, the Red Dragon God appeared just to enable Life Stream Dragon to be unlocked from its Machine form and reveal its true dragon form.
Life Stream Dragon has appeared in in the Japanese Yu-Gi-Oh! 5D's opening theme "[[BELIEVE IN NEXUS]]" and the ending themes "[[CROSS GAME]]" and "[[Close to you]]".
