Guy Gardner vs. John Stewart: Why Guy Is the DCU’s Green Lantern — Canon Event

⚠️ Spoilers for Lanterns through Episode 5 — and for Superman.

Here is the question every DCU viewer has been sitting on since Superman: if John Stewart is the Green Lantern of the flagship HBO show, why is Earth’s Green Lantern in the movies Nathan Fillion’s Guy Gardner?

Why the loud one? Why the bowl cut? Why the guy who treats a power ring like a company car?

Lanterns Episode 5 doesn’t say the words “and that’s why Guy has the ring.” But it puts the answer on screen, and the comics have been quietly setting it up since 1968.

This is a Canon Event: the comic history behind a thing the show just did.

The short version: in the comics, John Stewart only got a ring because Guy Gardner was hurt and couldn’t use his. Lanterns is running that in reverse — the Guardians are handing Hal’s ring to John, and co-creator Tom King has already said Guy is the one who ends up with it. Our read: John gives it back, and the one candidate in the mythology who will take a ring from anyone without asking a single question is Guy. The receipts — comics and show — are below.

Guy Gardner Was Always the Runner-Up

Guy debuted in Green Lantern #59 (1968), in a story literally titled “Earth’s Other Green Lantern.” The premise: when Abin Sur crashed on Earth and his ring went looking for a fearless, honest successor, it found two candidates. Hal Jordan got the job because he was closer. Guy Gardner was the one it would have picked otherwise.

That is Guy’s entire deal, and it has never really changed. He is the man who was good enough for the ring and didn’t get it — and who has spent the rest of his existence making sure everyone knows.

The Guardians made him Hal’s official backup. And that’s where John comes in.

John Only Got the Ring Because Guy Couldn’t Use It

John Stewart’s first appearance is Green Lantern #87 (1971). The reason the Guardians go looking for a new alternate Lantern in that issue is not cosmic. Guy Gardner gets hit by a bus.

Guy is out of commission, the Guardians need a backup, and they choose an architect from Detroit named John Stewart. Hal is ordered to train him. Hal doesn’t like him. John turns out to be better at this than either of them.

Read that again: in the comics, John Stewart exists because Guy Gardner was unavailable.

And it stuck. When Hal walked away from the Corps in the 1980s, it was John — not Guy — who became Earth’s Green Lantern. Guy came back later, angrier, with a personality that made him the Corps’ problem child and the funniest member of the Justice League International. For decades the two of them have been the answer to a question the comics never fully settle: which one of you is actually Earth’s Green Lantern?

The DCU has now answered it. Twice. In two different years.

What Lanterns Just Put on Screen

The show’s John Stewart story runs in the past — the Rushville investigation, the Guardians’ plan to move Hal out and John in, all of it happening years before Guy is flying around Metropolis with Mister Terrific and Hawkgirl.

Episode 4 gives John the chance to take Hal’s ring, and he refuses. (Our Episode 4 Lore Check covers that scene.) Episode 5 finally puts the ring on his hand — and he feels nothing. Not pride, not power. Empty. He tells the Guardians as much, and the Guardians answer with the most Guardian sentence imaginable: even we make mistakes. We correct them. (Full breakdown in the Episode 5 Lore Check.)

So as of Episode 5, the DCU has a Green Lantern situation that looks like this:

• Hal Jordan: being replaced by the Guardians, and unravelling about it.
• John Stewart: chosen, handed the ring, and not sure he wants the institution attached to it.
• Guy Gardner: Earth’s working Green Lantern in Superman, a decade later.

The show has not drawn the line between the second bullet and the third. But the comics did it fifty years ago, just in the other direction.

The Inversion

In the comics, John has the ring because Guy couldn’t take it.

In the DCU, Guy has the ring — our read — because John wouldn’t.

That is a very deliberate flip, and it fits everything else Lanterns has been doing. The Guardians “correct” mistakes by replacing people: the Manhunters, then Hal, and if John hands the ring back, then John. Who is the one candidate in the mythology who will take a power ring under any circumstances, from anyone, without asking a single question about the institution behind it?

Guy Gardner. Earth’s Other Green Lantern. The runner-up who never stopped wanting it.

Which would make the loud, uncomplicated Green Lantern of Superman not a joke about the character at all. It would make him the Guardians’ ideal employee — and a walking reminder of what John turned down.

Why This Makes Man of Tomorrow More Interesting

Aaron Pierre’s John Stewart is already booked for Man of Tomorrow (July 9, 2027). Nathan Fillion’s Guy is in Superman, in Lanterns, and voicing the character in Mister Miracle — he is, as we put it when that news broke, the connective tissue of the DCU.

If Lanterns ends with John walking away from the Corps, then Man of Tomorrow isn’t introducing a Green Lantern to the movies. It’s bringing back the one who quit — into a world where Guy has been doing the job in his absence. That’s the comics’ decades-long “which one of you is Earth’s Lantern?” argument, staged as an actual movie.

And if the show goes the other way — if John keeps the ring and becomes the Lantern the comics say he is — then the question becomes why Guy is the one wearing it in 2025. Either answer is a story. Lanterns has three episodes to pick one. (How the show and the films connect: our DCU breakdown.)

Canon Check

• Guy Gardner as the ring’s second choice after Hal? Canon (Green Lantern #59, 1968).
• John Stewart chosen only after Guy was injured? Canon (Green Lantern #87, 1971).
• John, not Guy, becoming Earth’s Green Lantern when Hal stepped away? Canon.
• Guy as Earth’s working Green Lantern in the DCU’s present? Canon — that’s Superman.
• John refusing the ring, then receiving it and feeling nothing? Lanterns, Episodes 4 and 5.
• “John handed it back, so the Guardians gave it to Guy”? Not stated on screen. That’s our read of where the show is pointing — and we’ll update this the moment it says otherwise.

Canon Event is The Nerd Wire’s series on the comic history behind what’s on screen. New episodes of Lanterns air Sundays on HBO and stream on HBO Max; everything we’ve written is on The Nerd Wire’s Lanterns hub.