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| appears anime = [[Yu-Gi-Oh! 5D's]]
| appears video games = [[Yu-Gi-Oh! 5D's Tag Force 5]]
| gender = male
| affiliation =
* [[Three Emperors of Yliaster]]
[[File:Placido offended.jpg|thumb|left|Primo offended by Jakob's remark.]]
Primo, Jakob and Lester were at the [[World Racing Grand Prix]] opening ceremony, observing the guests from the back room. Primo disagreed with Jakob's plan to use the WRGP participants to complete the [[Infinity Circuit]], as he felt that their own strength was enough to force the circuit to completion. Primo was disgusted at the idea that they needed to rely on humanity to complete their work. (In the English version, this was because Jakob misspoke their plan as "his plan".) [[Dobocle]] tried to crash the party by riding his [[Duel Runner]] through the party hall. Primo was initially entertained by this, but after [[Akiza Izinski]] chased Dobocle with her powers as a [[Psychic Duelist]], Primo became disappointed in [[Sector Security]]'s inability to catch up to Dobocle. Primo took it upon himself to go after Dobocle, and set out on [[Terrible Omen]]. He streaked past Security, who mistook him for [[Ghost]], as his Duel Runner was not registered in their database. Primo caught up with Dobocle and defeated him in a Turbo Duel, mercilessly causing him to crash. Primo returned to Lester and Jakob, where the three of them noticed Yusei Fudo was dueling [[Bruno|Vizor]]. They didn't see Vizor perform his [[Accel Synchro Summon]] because it caused the video feed to jam. The emperors were impressed as the Duel completed a portion of the Infinity Circuit, causing Primo to wonder what it was that caused the feed to jam.<ref>{{episode|Yu-Gi-Oh! 5D's|74|ref}}</ref>
So he decided to ask the source and set out after the duelist. Primo quickly caught up with him and wanted to know what he had just done, but the turbo duelist answered him that he had come to stop [[Three Emperors of Yliaster|them]]. Primo was shocked that he knew who they were, and demanded to know exactly who he was. The duelist refused to answer, which was an answer that Primo did not like. The unidentified duelist then told him that he would make sure they were undone by the [[Accel Synchro Summon]], which bewildered Primo. Before he could try to get anymore information out of the duelist, the duelist rammed Primo because he was about to run over a kitten in the middle of the road. As a result, the mysterious duelist lost control of his duel runner and crashed off a cliff and into the ocean. Primo then just shrugged the matter off, assuming the guy to be dead.
Primo brought the drinks down as Luna practiced using her new [[Duel Board]]. Lester at first asked about Leo's whereabouts, to which Primo responded that he thought that the extra guest had left. So Lester went on to apologize for making Primo be his butler, but Primo responded that he did not mind. He was curious to see the Signer's power for himself as well, a comment that made Lester chuckle.
Primo then spent the rest of Lester's test watching him duel against Leo and Luna from his throne along with Jakob. Primo commented that Lester was acting immature after he summoned [[Skiel|Machine Emperor Skiel Infinity]], but Jakob just responded that he was being a child. As the duel came to a close, Primo and Jakob were shocked to see Leo be saved by the Crimson dragon Dragon after Lester defeated him, and was stunned when Luna was saved from death by the Duel Spirits. Following Lester's victory though, all traces of Lester were removed from the timeline, including the house and Primo as a butler.
====Building Up a Brute Force====
Primo though, had returned to the control room, where he commented to himself that the Guard Robot was perfect to stall Yusei because it had been programmed with knowledge and strategies to counter Yusei's duel history, strategies, and [[Yusei Fudo's Decks]]. Primo then noticed [[Bruno]] come to the building security's attention because he had approached a locked door, leading to the [[Diablo]]'s storeroom, and was picking it. Primo was getting ready to install the program, but he did not want any intruders, so he teleported to the doorway and told Bruno he should not have come there. Bruno was reacted to Primo with a deja vu feeling, which also gave him a headache, but the moment was short-lived as Primo punched Bruno in the gut, knocking him unconscious. He commented that no one would get in his way.
[[File:Placido punches bruno.jpg|thumb|right| Primo punches out Bruno.]]
Primo then proceeded to the terminal in the room, declaring that he would give the Diablo new life with the best programs available. So he plugged in the stolen program and as the program started giving life to the Diablo, Primo commented to himself that with the greatest riding roids being born, Yusei needed to enjoy the time he had left. So Primo continued watching the duel as the program uploaded to the entire Diablo. Minutes later, as Primo enjoyed Yusei's struggle with the Guard Robot, Jakob contacted Primo, asking him what he thought he was doing. Primo responded that he was executing a plan of his own and asked Jakob to stop monitoring him. Jakob though responded that if Primo proceeded as he planned, then his own plans would go to waste. Primo just told Jakob he didn't give a damn about his plans and hung up on him. After hanging up on Jakob, Primo noticed that the download was complete, so he ordered the Diablo to awaken. The Diablo came online and started riding out of the factory.
With [[Team Catastrophe]] facing [[Team Five D's]], Primo personally watched the match from the roof of the Duel Stadium. As he watched both teams prepare to start the race, [[Lester]] appeared behind Primo, telling him he knew that something was off about Team Catastrophe's duels. Primo was apprehensive at first, but then Lester claimed that he was not responsible for anything Primo did all on his own, regardless of what Jakob did when ever he found out. Primo just responded that the geezer has been dragging his feet when it comes to the WRGP, so Primo decided to do things his own way. Lester just wished Primo luck as the starting horn sounded.
Primo watched the duel between [[Hermann]] and Crow with silent intent up until Crow defeated Hermann and took out [[Hidden Knight -Hook-]] permanently. Lester taunted Primo with how his plan was looking to be a wash, but Primo just continued watching the match as [[Jack Atlas]] and [[Nicolas]] dueled. Nicolas quickly revealed that he had received another card of darkness from Primo along with Hidden Knight -Hook-: [[Doom's Ray]]. Nicolas played the card to force a draw and crash Jack, but Nicolas quickly found out that he was not immune to his own card of Darknessdarkness. Jack Atlas saved himself with his [[Power Giant]], and also saved Nicolas as well, but when Nicolas's Duel Runner was destroyed and Team 5D's declared the winners and a guaranteed spot in the Top Eight spot, Lester declared Primo's plan an official wash and asked him for his opinion on why his plans always failed, but Primo had left long ago.
====The Diablo is Unleashed====
Primo suggests to the others that they should make use of their true power in this final battle, the powers that were restricted by their creator [[ZONE]].
Later, Primo, Jakob, and Lester talk to Yusei and the others through a hologram. They tell them that the island is actually [[Arc Cradle]] and that it will appear with Team New World's victory in WRGP, triggering the destruction of New Domino City, and changing the world. During the match, he is seen with Jakob in the pit, observing Lester's duel with Jack. After Lester activates "[[Infinite Spirit Machine]]" Primo comments on its activation and Jakob adds that the 'plan was successful'. When Lester loses the duel, Primo is shown waiting on the [[Terrible Omen]]. He then congratulates Lester on his loss, to which Lester responds in annoyance. Lester hands him the three cards on his field and Primo looks back at the [[Arc Cradle]] and prepares to duel Jack.
During Aporia's duel with Yusei, Aporia reveals that Lester, Primo, and Jacob were all one in the same, just different periods of Aporia's life (Lester was his childhood, Primo his adulthood, and Jacob his elder years). Aporia also revealed that Aporia/Primo had lost the person he loved, revealing that Aporia/Primo and this woman were either in love with each other, or that it was a one-sided love.
== Trivia ==
*During the time he was a soldier, he is seen wearing something that looks like a "scouter", a piece of technology from the [[wikipedia:Dragon Ball Z|''Dragon Ball Z'']] anime.
