If season 16 of Supernatural were to happen, there's a variety of characters that could return to the hit show. Since its release in 2005, Supernatural ran for 15 seasons and followed the story of the Winchester brothers as they saved people and hunted monsters across America. Sam and Dean Winchester have met multiple characters on their journeys, and some of them are part of Supernatural’s many unresolved storylines.

However, after Jack becomes God and the Winchesters reunite in Heaven, Supernatural season 16 looks unlikely to happen. Even so, this hasn't killed interest in a potential revival of the monster-hunting show. With such a large audience, Supernatural may still return for another season, and if it did, there are definitely some characters who should make a comeback in Supernatural’s sixteenth season.

10 Donna Hanscum

Donna Has An Unresolved Storyline

Donna Hanscum first appeared in Supernatural season 9, episode 13, “The Purge,” and she encountered Sam and Dean at Canyon Valley Health Spa where a Pishtaco secretly sucked the fat out of her. Donna eventually established herself as a seasoned hunter by season 15, quickly becoming friends with Jody Mills due to their shared profession, and often helped the Winchesters whenever she could.

Wayward Sisters was a proposed Supernatural spinoff which would have centered around Jody, Donna, and Jody’s adopted girls.

Donna would be a perfect character to return in a possible season 16 of Supernatural due to her role in its backdoor pilot episode “Wayward Sisters.” Wayward Sisters was a proposed Supernatural spinoff which would have centered around Jody, Donna, and Jody’s adopted girls. The episode followed the women as they rescue Sam and Dean from an alternate world, the Bad Place, but failed to produce a spinoff. However, season 16 proposes the perfect chance for the cheerful Donna to return to this storyline, especially as the sheriff is a less-developed character than the Winchesters' motherly friend, Jody Mills.

9 Garth Fitzgerald IV

Garth Only Appears In Six Episodes

Garth claims that his introduction to monster hunting happened when he killed a Tooth Fairy while training to become a dentist. Generally working alone, Garth isn’t a very competent hunter, as seen in the three times he teams up with the Winchesters; there is a running joke in Supernatural where Garth often gets knocked out at the start, awaking only when the fight is over, asking “what did I miss?” Garth is a kind-hearted character who bonds with the Winchester brothers despite his rather strange methods, such as using a sock puppet called Mr Fizzles to question a child.

Garth names his twin children after Sam and Castiel, much to Dean’s disappointment.

Garth is an underrated character in Supernatural, having only appeared in six episodes. In later seasons, Garth is revealed to have turned into a werewolf, semi-retired from hunting, with a family of his own. Over the years, Garth becomes a competent organizer of hunters following Bobby’s death, and his new werewolf status makes him a better hunter than before. Therefore, Garth should return to the hunting life because he would be a valuable asset to Sam and Dean if they were to face a big villain in Supernatural season 16.

8 Ash

Ash Was Extremely Smart And Underutilized

As one of the smartest characters in Supernatural, Ash was first introduced in season 2, episode 2, “Everybody Loves A Clown.” Ash lived at the Roadhouse with Ellen and Jo Harvelle and was respected by hunters for being a genius. While Dean was originally skeptical of Ash’s genius in their first meeting, due to his unkempt appearance, Ash managed to impress Dean by creating a “Demon alert system” (which tracked signs associated with Azazel’s presence via weather satellites) in two days, using John Winchester’s journal. Unfortunately, Ash was killed in season 2, episode 21, when the Roadhouse burns down.

Shockingly, Ash reveals that he can navigate people’s Heavens by using string theory and has become fluent in Enochian since tapping into “Angel radio.”

However, Supernatural is known for bringing back characters, and Ash reunited with Sam and Dean in Heaven in season 5’s “The Dark Side Of The Moon,” where Ash and Pamela Barnes help them find the Angel, Joshua. Shockingly, Ash reveals that he can navigate people’s Heavens by using string theory and has become fluent in Enochian since tapping into “Angel radio.” Ash’s intellect sets him apart from most Supernatural characters, and his skillset is extremely underutilized. Therefore, season 16 could present a perfect opportunity for him to return, especially as the Winchesters are reunited in Heaven in Supernatural’s divisive finale.

7 Jesse Turner

Jesse Disappears After One Episode

Jesse Turner was a young boy who appeared in Supernatural season 5, episode 6, “I Believe The Children Are Our Future,” when Sam and Dean investigate why people are meeting deadly fates with practical joke toys in Nebraska. An eleven-year-old Jesse was revealed to be the cause of the childish misconceptions, as whatever he believed became reality. Sam and Dean’s investigation led to the discovery that Jesse’s mother was pregnant with Jesse while possessed by a Demon, resulting in the birth of a Cambion (a half-human/half-Demon hybrid). Castiel tells the Winchesters that Jesse is the Antichrist and must be killed.

Sam and Dean give Jesse a choice about his fate after telling him that Angels and Demons will be searching for him. Jesse decided to say goodbye to his parents, but then Jesse secretly used his powers to disappear without a trace and he was never seen again on the show, making him an underrated character. With Supernatural’s stakes problem affecting the possibility of another season, Jesse poses the perfect resolution. Jesse’s unresolved storyline could be addressed in Supernatural season 16.

6 Ben Braeden

Ben Could Be Dean Winchester’s Son

In Supernatural season 3, Dean visited Lisa Braeden, his former lover, and was surprised to discover that Lisa had a son called Ben. Being of the right age and sharing a lot of Dean’s mannerisms, interests, and looks, Dean suspected that Ben might be his son and confronted Lisa with his theory. However, Lisa tells Dean that Ben was not his. Following Sam’s sacrifice in the season 5 finale, Dean honors his brother’s wishes by returning to Lisa and Ben to try to live a normal life. Dean and Ben bonded during this time, with Ben considering Dean as family.

Dean has canonically been a father due to season 7, episode 13, "The Slice Girls."

However, when Ben was kidnapped by a Demon possessing Lisa in season 6’s “Let It Bleed,” Dean rescued the pair but struggled with the fact they were still being put in danger even after he had left them. As a result, Dean had Cas erase all memories of him from Lisa and Ben’s minds in one of the saddest moments in Supernatural. Ben would be a perfect character to return if Supernatural had a season 16, as he was considered Dean’s son regardless of genetics, and their reunion would provide Dean with a happier ending than season 15’s finale.

5 Eve

The Mother Of All Is Still Around

As the “Mother of All,” Eve was a mysterious and powerful being who existed before Angels and was said to have known God. Eve lived in Purgatory alongside the Leviathans and was the creator of the Alphas, whose entire species descended from them. In Supernatural season 6, Crowley tortured and killed multiple Alphas to lure Eve to Earth, so he and Castiel could use Purgatory’s souls as power. When Eve emerged, Eve began creating powerful supernatural creatures to contaminate humans so that Crowley would be denied any of their souls.

Dean names Eve's new creatures the "Khan Worm" and "Jefferson Starships."

Sam and Dean loaded Phoenix ash into shotguns to defeat her, but Eve quickly disarmed the Winchesters and offered them a deal, to which Dean responded, “bite me.” Thinking she had the upper hand, Eve obliged. However, Dean had cleverly ingested some of the Phoenix ash beforehand, and Eve was slowly poisoned. Eve’s soul returned to Purgatory upon her death and was not heard from until she sent monsters after Cas and Dean in season 15. Therefore, there is potential for Eve to return in Supernatural season 16 as she still has not gotten revenge on the Winchesters and Cas.

4 Frank Devereaux

Frank Helped Defeat The Leviathans

Frank Deveraux was an important character to Supernatural’s Leviathan plot in season 7. After the Leviathans cloned Sam and Dean and shot up a bank, the Winchesters were back on the FBI’s most wanted list. Bobby directed the brothers to Kevin R. McNally’s character, Frank Devereaux, who he described as “a jackass and a lunatic” but also a computer expert and hacker. Frank lived up to Bobby’s description of a paranoid yet extremely intelligent hacker, and he actually helped Sam and Dean to defeat the Leviathans by protecting them from the law and providing them with information on the Leviathan, Dick Roman.

Kevin R. McNally was supposed to return as Frank in Supernatural, but the actor was busy.

Frank’s last appearance in Supernatural was in season 7, episode 16, “Out With The Old,” in which Frank called Dean and warned him that their investigation brings them too close to Dick Roman, and they should leave before the Leviathans realize. The episode ends with the Winchesters visiting Frank’s RV, where they find the place trashed, and the walls covered in blood. Frank’s disappearance is one of Supernatural’s mysteries, but the interesting character could return in a possible season 16 to provide the Winchesters with another conspiracy, as many fans suspect Frank faked his death to avoid the Leviathans.

3 The Original Death

Death Was Older Than God

Death was a primordial being who existed since the beginning of time and possessed power beyond understanding. He first appeared in season 5, episode 21, “Two Minutes To Midnight,” (one of Supernatural’s song title episodes), in which Dean and Death made a deal to trap Lucifer in his Cage, releasing his bindings on Death. Death’s introduction is widely regarded as Supernatural’s best character introduction because the scene showed how powerful he is. However, despite his immortality and unknown age, Dean was able to kill Death with his own Scythe in season 10’s “Brother’s Keeper.”

As old as God. Maybe older. Neither of us can anymore. Life, death, chicken, egg. Regardless—at the end, I'll reap him too. - Death

However, as one of the Four Horsemen, Death’s attributes are ed on to other incarnations as they are part of the natural order. As Billie was the next Reaper to be killed after the original Death dies, she then took on the role as the new Death. While Billie could easily return in season 16, Julian Richings’ original Death was definitely underrated and could provide a surprise comeback, as he originally said he was going to be the one to reap God.

2 Kevin Tran

Kevin Is Stuck In The Veil

Kevin Tran was an unfortunate student whose life turned upside down after being struck by lightning and becoming a Prophet of the Lord in Supernatural season 7. Kevin was integral to season 7’s plot involving the tablets which had the Words of God inscribed on them. He was kidnapped multiple times throughout Supernatural and forced to translate the tablets for his kidnappers to gain the secrets within. Unfortunately, Kevin was eventually killed by Gadreel who was possessing Sam in “Holy Terror.”

Ghosts who are trapped in the Veil in Supernatural often turn vengeful and kill people, which causes hunters to intervene.

In season 11, Kevin returns as a Ghost and tells the Winchesters that they should trust God, before God sends him to Heaven. However, God lied. Kevin returned in season 13’s “Raising Hell” alongside other Ghosts the Winchesters have encountered before and revealed that God had actually sent him to Hell. After realizing he cannot return to Heaven now his soul is tainted, Kevin decides to roam the Earth as a Ghost as it is better than returning to Hell. Kevin’s return in a possible Supernatural season 16 could hopefully resolve the unfortunate character’s plotline and fix his sad fate.

1 Harry Spangler And Ed Zeddmore

The Ghostfacers Could Return

In season 1 of Supernatural, Harry and Ed were introduced as part of a paranormal investigation team who documented their encounters online. The pair eventually form the “Ghostfacers” and vlog the paranormal investigations in an effort to get picked up by a network. The Ghostfacers were Sam and Dean’s most annoying problem, as they did not understand the severity of monster hunting and were focused on the fame aspect. Ed and Harry eventually split up in season 9 after Ed faked a ghost hunt to stop Harry from leaving Ghostfacers.

While the Ghostfacers were a genuine annoyance to the Winchesters, they did provide comedic relief to the show. Their unserious nature caused conflict with the Winchesters over the years, although Sam and Dean sympathized with their strained relationship in season 9. The Ghostfacers were an under-utilized plot element, however, as they have openly included Sam and Dean in their vlogs and nothing ever came of it, even when they were wanted by the FBI. Season 16 could bring these iconic characters back as a bit of comedic relief to break up the heavy story after Supernatural season 15.