Some spoilers hide in plain sight for years. The theory doing the rounds is that Lanterns may turn John Stewart into a Yellow Lantern, and that James Gunn dropped the hint back in January 2023.
That was when Gunn unveiled the DCU Chapter 1 slate and confirmed a Hal Jordan and John Stewart story. There was no cast yet, so the promo leaned on comic art from Green Lantern: Earth One. In that story, John ends up wearing yellow.
Coincidence? Maybe. But the show keeps echoing that book, which makes the theory hard to wave away.
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Why the Earth One Clue Matters?
The comic art wasn’t random. The book and the show share a lot of DNA:
- A gritty, grounded take on the Green Lantern mythos
- The Manhunters as a threat
- Friction between Hal and John
- A similar suit design
If the show borrows this much from Earth One, it’s reasonable to ask whether it borrows the ending too.
Lanterns Clue Board
| Clue | What We’ve Seen | Why It Points to Yellow |
|---|---|---|
| Promo art (2023) | Imagery from Earth One | John turns Yellow Lantern in that comic |
| John’s fearlessness | He claims he feels no fear | Yellow rings run on fear, so this is his blind spot |
| Sinestro’s arrival | Hiding out on an alien world | He founded the Yellow Lantern Corps in the comics |
| The alien planet | A gas that floods people with terror, plus a forge and a yellowish glow | Sounds like the ideal place to make a fear-powered ring |
| Episode 8 trailer | Lines about fear being powerful and being afraid to be afraid | Nudges John toward embracing fear |
| Power battery | John shows up with one in the finale promo | Could be charging a new ring |
| Title | “Lanterns,” not “Green Lanterns” | Suggests more than one ring color |
The Fear Factor
Green rings run on willpower, while yellow rings run on fear. John has spent the whole season trying to be fearless, and he has hinted that his childhood drilled fear out of him.
That sets up a neat arc. A man who fights fear for a lifetime finally accepts it and is transformed. It’s a twist that would feel earned, not random.
Enter Sinestro
Thaal Sinestro, played by Ulrich Thomsen, is the architect of the Yellow Lantern Corps in the comics. In the DCU he has already broken with the Guardians and been jailed by Hal, but no yellow ring has appeared yet.
Now he’s holed up somewhere with a forge and a terror-soaked atmosphere. Showrunner Chris Mundy has also talked about a “coaching tree,” meaning what Sinestro passed to Hal and, through Hal, to John. The finale may finally cash that in.
How It Could Play Out
- Sinestro forges a ring for John. He becomes one of the Corps’ first recruits.
- John takes the ring himself. He steals it while bringing Sinestro to justice.
- Guy Gardner stays Earth’s Green Lantern. That keeps the Guardians’ one-Lantern-per-sector rule intact.
- John returns to green in Season 2. His yellow chapter could then inform his appearance in Man of Tomorrow next July.
What About the Hal Jordan Parallax Theory?
Fans noticed plenty of yellow around Hal and guessed he might become Parallax, the fear entity. That idea looks weaker with each episode, especially after Hal’s unexplained death. John is now the stronger candidate for a fear-driven turn.
Conclusion
It’s a theory, and a good one, but the finale could still zig. What I like is how neatly it resolves the show’s central themes: fear, destiny, and what it really takes to wear a ring. If it happens, it’ll be a rare case of a spoiler hiding in plain sight for over three years.
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FAQs
Has HBO confirmed John Stewart becomes a Yellow Lantern?
No. It’s a fan theory based on the show’s clues and the Earth One comic.
Who created the Yellow Lantern Corps?
In the comics, Sinestro founded it after splitting from the Green Lantern Corps.