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(Spoiler alert: Please do not read on if you have not watched Sunday’s episode of “The Walking Dead”)

Sunday’s episode of “The Walking Dead” appeared to kill off a major character that has been a part of the series since Season 1.

But is — seriously, stop reading if you haven’t seen the episode — Glenn (Steven Yeun) really dead?

According to the zombie drama’s showrunner Scott Gimple, he’ll be back — even if only in pieces.

Also Read: 'Walking Dead' Shocker! Death of Fan-Favorite Shakes Series to Its Core

“In some way, we will see Glenn, some version of Glenn, or parts of Glenn again, either in flashback or in the current story, to help complete the story,” Gimple said after the show on AMC’s “Talking Dead.

But some fans aren’t convinced, and immediately started theorizing how Glenn could have survived the horde of zombies he fell into. And given the character’s penchant to survive near-death situations in previous episodes, TheWrap can’t say they’re wrong just yet.

See Video: 'Walking Dead' Star Steven Yeun Wants to Make It Clear: Not All Asians Look Alike

Check out five of the best theories below:

1. The Walkers Were Eating Nicholas, not Glenn

After Nicholas shoots himself, his body falls on top of Glenn as they both fall off the dumpster they were using as refuge from a herd of walkers. The angle of the camera never lets viewers see if the walkers are truly eating Glenn’s body or Nicholas’, so there is a chance Glenn could survive if…

2. Nicholas’ Remains Camouflaged Glenn

Characters have cheated death numerous times on the show by covering themselves in blood and entrails, rendering them all but invisible to walkers. If the walkers tore Nicholas’ body apart, the resulting carnage could shield Glenn, enough so that he could escape.

Also Read: 'Walking Dead' Showrunner Teases Return for Fan-Favorite Character

3. Glenn Rolled Under the Dumpster

If the walkers were sufficiently distracted with Nicholas, it could have given Glenn the opportunity to roll under the nearby dumpster to relative safety. Once underneath, Glenn could employ the quick thinking that has made him a fan favorite in order to escape.

4. Glenn Dies Very Differently in the Comics

In “The Walking Dead” graphic novels, Glenn does not die at the hands of walkers, but rather one of the living. Negan, the leader of a vicious group called The Saviors, murders Glenn with a baseball bat. While still a grisly end, fans of the show are hoping Glenn will live to die another day.

See Video: 'Walking Dead' Stars Lighten Up in New Blooper Reel Leaked Online

5. Enid Saves Glenn

In episode two of this season, Alexandria resident Enid fled the community after the attack by The Wolves. Some are hoping that she will find Glenn before the walkers get to him and distract them enough for him to escape.

6. Lady Melisandre Resurrects Glenn

Just kidding. (But how sweet would a “Game of Thrones”/”Walking Dead” crossover episode be?)

Watch Yeun talk about death after the apocalypse in an episode of TheWrap’s “Drinking with the Stars” below:

'The Walking Dead': The Most Shocking and Disturbing Deaths So Far

SPOILERS AHEAD. "The Walking Dead" has never been shy about showing lots of gore and death, but some characters' demises hit harder than others. Look back on some of the most gut-wrenching kills from the hit AMC series.
When Andrea's sister Amy ( Emma Bell) died in season 1, it proved that no one was safe.
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The death of Jim (Andrew Rothenberg) in season 1 showed the characters how to treat a bitten person for the first time.
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Sophia (Madison Lintz) was beloved by all, but Rick did not hesitate when it came time to pull the trigger when she became a walker.

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Dale (Jeffrey DeMunn) was the moral compass of the group, but died in the midst of the discussion around executing their prisoner, Randall.

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Shane (Jon Bernthal) was ready to kill Rick, but Rick acted first, proving himself to be a fearless leader.

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T-Dog (IronE Singleton) gave his life to save Carol from walkers when the group tried to take the prison.

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Lori (Sarah Wayne Callies) died during childbirth, prompting Carl to shoot her in the head to prevent her reanimation.
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Merle (Michael Rooker) proved he was a good man by giving his life in an attempt to stop The Governor.
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Andrea (Laurie Holden) failed to see The Governor for what he was and paid the ultimate price.
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Hershel (Scott Wilson) wanted peace, but The Governor took his head to prove a point to Rick.
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Tyrese (Chad Coleman) let his guard down for a just a moment, but long enough to get bitten by a walker.

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Lizzie (Brighton Sharbino) killed her sister Mika (Kyla Kenedy) before Carol shot Lizzie in the back of the head.
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Beth (Emily Kinney) died protecting Noah from Dawn (Christine Woods), forcing Daryl to shoot Dawn in the head.
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Noah (Tyler James Williams) endured one of the most gruesome deaths in "Walking Dead" history thanks to Nicholas.
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Jessie (Alexandra Breckenridge), Ron (Austin Abrams) and Sam (Major Dodson) all died within seconds of each other. Sam got eaten when the horde invaded Alexandria. Jessie died as she tried to save him. Ron then attempted to kill Rick, but got stabbed by Michonne and was subsequently eaten.
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Abraham (Michael Cuditz) was the one we had to wait six months to see murdered by Negan. He, of course, got his head beaten in with Negan's barbwire-wrapped baseball bat, Lucille.
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But Abraham wasn't Negan's only victim that night. After Daryl punched Negan, Negan decided he had to make another example out of someone in the group -- and he chose Glenn.
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Spencer (Austin Nichols) thought he could use Negan to kill Rick in order to assume control of Alexandria. But Negan had other plans, gutting Spencer in full view of everyone in the community
Gene Page/AMC
Olivia (Ann Mahoney) suffered plenty of indignities at Negan's hands, and he eventually repaid her by having her shot
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Ole Dr. Carson made a critical error by saying mean things about Sherry to Dwight over and over again. So Dwight framed the good doctor for helping Daryl escape from the Saviors -- and Negan threw him into the furnace for it.
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When King Ezekiel's crew was short one cantaloupe in its tribute for Negan's Saviors, Benjamin was shot in the leg as punishment. Unfortunately, the shot hit an artery, and young Ben bled out.
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It turned out that Richard had tossed one of the cantaloupes because he wanted to start a war between the Kingdom and Saviors -- and he thought they would kill him for being short. They shot Ben instead, but Morgan strangled Richard the next day after Richard confessed.
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Sasha (Sonequa Martin-Green) used Eugene's suicide pills to kill herself while she was theatrically locked in a casket because of some ridiculous thing Negan was doing. When Negan opened the casket she popped out as a walker and saved Rick and the residents of Alexandria in a clutch moment.
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Morales (Juan Gabriel Pareja) returned in season 8 after having been gone since season 1, but that return was short-lived. About ten minutes in show time after Morales, his family dead and now a member of the Saviors, showed up he got shot my Daryl.
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Eric (Jordan Woods-Robinson) got shot during the Alexandrians' battle against the Saviors, and then bled out and turned into a walker after a tearful goodbye scene with his boyfriend Aaron (Ross Marquand).
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Shiva the tiger bit the dust while saving Ezekiel, Carol and Jerry from a bunch of walkers in Season 8. There were just too many and they swarmed and ate her.
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Carl died in the season 8 mid-season premiere after suffering a zombie bite in the first half of the season.
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Gregory got his long overdue death when he was executed by hanging for trying to murder Maggie in the season 9 premiere.
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Jesus was killed when he tried to decapitate a zombie only to discover that zombie was actually a living man disguised as one -- this was Alexandria and Hilltop's first real contact with the Whisperers.
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TheWrap looks back at those who have fallen victim to the zombie scourge–and other humans–over nine seasons

SPOILERS AHEAD. "The Walking Dead" has never been shy about showing lots of gore and death, but some characters' demises hit harder than others. Look back on some of the most gut-wrenching kills from the hit AMC series.

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