Changes

When Crow Synchro Summoned "[[Assault Blackwing - Raikiri the Rain Shower (anime)|Assault Blackwing - Raikiri the Rain Shower]]", Jack knew that Zarc would do the same during Crow's turn. Jack was surprised when Crow was able to deal damage to Zarc and when Zarc Summoned "[[Supreme King Dragon Odd-Eyes (anime)|Supreme King Dragon Odd-Eyes]]". To Jack's shock, it appeared that Sylvio had been able to destroy "Z-ARC", but Zarc was protected by the presence of the [[Fusion Monster|Fusion]], [[Synchro Monster|Synchro]] and [[Xyz Monster]]s in the [[Graveyard]], including Jack's "Scarlight". [[Leo Akaba]] joined the Duel, and when Leo and Zarc mentioned [[Natural Energy Four Nature Cards|the cards]] needed to defeat Zarc, Jack was surprised to hear of such cards.<ref name="ep139">{{episode|Yu-Gi-Oh! ARC-V|139|ref}}</ref> When [[Declan Akaba|Declan]] was telling Yuya how he moved people's hearts, Jack reminded Yuya how he moved the hearts of New Domino's people. Jack was surprised when he thought "Zarc" killed Declan. He and Crow were pleased when [[Ray Akaba|Ray]] [[En Winds|turned]] all of Zarc's Synchro Monsters into [[Normal Monster]]s with their effects negated.<ref name="ep140">{{episode|Yu-Gi-Oh! ARC-V|140|ref}}</ref>

Following the battle with Zarc, Jack returned to the Fusion Dimension to watch Yuya and Shay's Duel. After Yuya won and declared that he would save [[Zuzu Boyle|Zuzu]] and [[Lulu Obsidian|Lulu]], Jack called him conceited and told him that he couldn't save anyone in his current condition.<ref name="ep145">{{episode|Yu-Gi-Oh! ARC-V|145|ref}}</ref> Jack explained that Yuya feared using the Four Dimension Dragons because of the possiblity that he would reunite with them again. He told Yuya he was disqualified as a Duelist for not having free control over his dragons, despite their ferociousness. Yuya claimed that he refused to use the dragons out of fear of hurting Riley and that he wanted to make her smile without them. Jack replied that Yuya mustn't hesitate, and use the four dragons if he wanted to achieve his goal. He and Yuya Action-Turbo Dueled on the [[Dimension HighwayMultiverse Speedway]] that had been activated throughout the [[Four Dimensions]]. Jack quickly brought out "Scarlight" and told Yuya to bring out the four dragons, but Yuya was still hesitant and instead attacked with "[[Odd-Eyes Pendulum Dragon (anime)|Odd-Eyes Pendulum Dragon]]" and his "[[Performapal]]s". Jack fended off the attack, and told Yuya he was unsatisfied with the Duel and used "Scarlight" to destroy all of Yuya's monsters and deal damage, except "Odd-Eyes", leaving Yuya one chance left to bring out all four dragons. However, Yuya still refused, revealing that he also feared something could happen to Zuzu, [[Celina]], Lulu, and [[Rin]] as well. Yuya attacked "Scarlight" using the same combo again, but Jack repelled the attacks again. Disappointed in Yuya for not bringing out the four dragons, Jack warned him he would destroy him on his turn. He brought out "Tyrant Red Dragon Archfiend" and attacked Yuya's monsters with both of his dragons, but Yuya negated the attack of "Scarlight" and the effect of "Tyrant" with the effect "[[Performapal Odd-Eyes Dissolver (anime)|Performapal Odd-Eyes Dissolver]]". Jack subsequently destroyed Yuya's monsters with the effect of "Scarlight" except "Dissolver" due to its own effect. On his next turn, Yuya revived his monsters for the third time, angering Jack as he thought Yuya was trying to repeat his ineffective combo. Yuya clarified that he understood what Jack meant, and Jack told Yuya to show his strength as a master who controlled the four dragons. Yuya obliged, assembling "[[Dark Rebellion Xyz Dragon (anime)|Dark Rebellion Xyz Dragon]]", "[[Clear Wing Synchro Dragon (anime)|Clear Wing Synchro Dragon]]", and "[[Starving Venom Fusion Dragon (anime)|Starving Venom Fusion Dragon]]" alongside "Odd-Eyes".<ref name="ep146">{{episode|Yu-Gi-Oh! ARC-V|146|ref}}</ref>