Shark’s very first acquaintance which have Quattro was at the Federal Duel Circuit, in which he had been Shark’s enemy from the final suits, that he acquired of the disqualification. The guy becomes Shark’s target off revenge when he indicated that he put Shark right up to possess disqualification from the place his Deck in order for Shark could see they, and try the main one responsible for Rio’s wounds.  Shark joined the country Duel Carnival attain revenge for the Quattro, expenses most of the time desire your die besten pansexuellen Dating-Seiten. Once they manage see, Quattro requires pleasure of mocking Shark and you can provoking your, because it are part of the their family members’ intentions to have fun with Shark and then make his hatred build.  
Faker in place of him. Within WDC party, Quattro encountered Shark off anger, just to build a lot more annoyed whenever Shark mocked your before leaving.  About finals, it proceeded to help you induce both since Quattro provided Shark so you’re able to the new „Magma Job” due to their rematch Duel.   Regarding anger, Quattro savagely Dueled facing Shark to demonstrate their father he was a lot better than your.  Once Quattro forgotten so you’re able to Shark, the guy apologized to possess their mistakes and you will entrusted Shark into the activity off beating Vetrix, and this just resentful Shark. His revenge and you will outrage then shifts in order to Vetrix, when he was the person who orchestrated the whole thing. 
Shark later reunited that have Quattro as he found help him which have Duel up against Chironex and you can teamed up your. The two rivals create a number of companionship, even though they usually traded insults to one another, and that generated Trey commented it absolutely was difficult to find out whenever they was basically with the a otherwise bad words.   When Shark sided to your Barians while the Nash and you will bankrupt his ties having mankind, Quattro are determined to Duel against the merely people the guy titled a friend managed restore new ties Nash used to have.  Immediately after Nash shown how Quattro’s partners perished in their Duels having the latest Barians, Quattro are disgusted during the how long Nash got fallen and recognized he is actually no longer Reginald.  In the event Quattro experimented with one final time to get „Reginald”, right back he was unproductive, and as his spirit went into the Barian Community, the fresh opponents bid a sad farewell to each other, that have Nash guaranteeing to become listed on Quattro when you look at the Hell following the combat concluded.  Although not, it getting friends once more shortly after Yuma and Astral’s duel.
Dumon [ revise ]
During the his tenure due to the fact Emperor of Joined Countries of your Poseidon Ocean, he had befriended an excellent knight out-of various other kingdom. So it knight, Dumon, had become intimate which have Nash, swearing to defend and you may fight close to your and his foes. 
The relationship also continued on to the 2nd lifestyle, when the a few males is reincarnated since Barians where Dumon perform continue steadily to suffice Nash once more. Despite Nash got allegedly gone away about Barian industry, Dumon (today chief of one’s other Barians) kept about the hope its leader would return one day. Shortly after Vector got mentioned the potential for the forgotten leader are on earth, Dumon became absolutely calculated to find and give their leader straight back.  
Shortly after they turned into visible one to Nash was indeed the human Shark, Dumon been able to encourage your it was his future to help you join the Barians, finally Nash had signed up with him again. 
Vector [ edit ]
Shark and you may Vector are arguably arc-enemies; having a common hatred comprising far-back on the old prior. In their earlier in the day life, Vector is actually the brand new Prince of the nation you to occupied the brand new Joined Countries of one’s Poseidon Water, which was governed by the Shark’s previous lives– Nash. Which made Vector physically guilty of slaughtering Nash’s Kingdom playing with his beast armed forces. Into a far more individual peak, Vector’s attack pressed Nash’s brother Marin so you’re able to lose herself so you’re able to summon the sea Goodness Crystalzero, that has been a source of astounding grief to have Nash. In the event the two was at some point revived as Barians, their genuine memories was basically shut aside by the Wear Thousand, so that the duo did not admit one another right away. Although not, its shared hatred allowed actually within their this new identities, Nash loathing Vector having his constant defiance. Vector at some point ran as much as to ascertain a beneficial „Part system” for each big date Nash frustrated your (and certainly everything Nash said or did frustrated your), ultimately deciding to betray their chief on one hundred,000,one hundred thousand things.