Bruno, born Johnny (ジョニー, Jonī)[1] and later known as Antinomy (アンチノミー, Anchinomī),[4] was a man from an apocalyptic future, who following his death was recreated as an android avatar by Z-one. Antinomy was sent to the present, where he guided Yusei Fudo to learn Accel Synchro, under the guise of Vizor before eventually suffering amnesia during an accident and befriending Yusei and Team 5D's under a new amnesiac guise as Bruno.
As per his mission, he was created for the sake of guiding Yusei Fudo to learn Accel Synchro, without knowing the actual reason behind it.[5] According to Aporia, Bruno's memories were wiped out by Z-one in the first place with the intention of stimulating the evolution of Team 5D's progress.
He is one of the few left-handed Duelists and as such, has his Wrist Dealer and Deck on his right arm (when human, he was right-handed and had them on his left arm). He was the only member of Team 5D's who never became a Signer.