Arrowseemingly substantiate a long - running rooter theory that original Team Arrow founder John Diggle is the Arrowverse ’s combining weight of theGreen LanternJohn Stewart . While earlier episodes have drop similar hints to the two characters being linked , the storyline of season 7 , installment 19 , " Spartan " , made the connection clear .

Green Lantern andGreen Arrowhave been a   squad since author Dennis O’Neil first joined Oliver Queen and Hal Jordan together inGreen Lantern / Green Arrow # 76.It was during this same series that the character of John Stewart was first introduced inGreen Lantern / Green Arrow # 87and a tradition of Green Arrow teaming - up with various Green Lanterns began . When the grapheme of soldier - turned - bodyguard John Diggle was create to move as Oliver Queen ’s correct - hand man onArrow , he was meant to be amodern - day Little John , much as Oliver Queen was found on Robin Hood . Still , may comic fans have hoped that John Diggle might wind up wear a Green Lantern ring before the serial ' conclusion , as a nod to John Stewart .

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Arrow ’s showrunners have clearly been mindful of the fan possibility , but did n’t commence espouse it into the show until season 7 . During theElseworldscrossover case , Supergirl , Team Arrow and Team Flash briefly joined force play with the Barry Allen of Earth 90 - the setting of the 1990’sThe Flashshow starring John Wesley Shipp . As this version of The Flash is stick in to the heroes of Earth-1 , he seems surprised to see a conversant face among them , clearly agnize John Diggle and asking why he was n’t wearing his halo . The implication was clear - on Earth 90,John Diggle was a Green Lantern !

" Spartan " go a step further in establishing a connectedness between John Diggle and John Stewart . The open up scenes of the episode see Team Arrow bug agents of theNinth Circlethat are adjudicate to   slip classified military papers . While successful in thwarting the theft , our heroes are left with no estimation of the   nefarious group ’s ultimate goal in acquiring this specific information . This leads to Diggle reluctantly indicate they confer with with a full general he knows who would be privy to that information . This full general is eventually revealed to be John ’s stepfather , whom he never let along with , and his name is General Roy Stewart .

While this is n’t quite the same as order a Green Lantern ring on John Diggle ’s finger , it does tie him into a Stewart home , and   deepen the Elseworlds reference . Perhaps on other globe in the Arrowverse , a younger John Diggle recrudesce a better human relationship with his stepfather and took his surname volitionally or was formally dramatize by General Stewart and given his name ? In either case , this is indisputable to plant fan speculating about the theory that we may finally see Diggle become Green Lantern sometime before theend ofArrowseason 8 .

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More : pointer : How Crisis On Infinite Earths Can Make John Diggle The Green Lantern

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John Diggle in Arrow as Green Lantern

Diggle with General Roy Stewart in Arrow

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