Although the idea of a Bad Future had been played with in Season 5, and The French Mistake the following season, it wasn't until seasons 12 and 13 where Sam, Dean and Castiel began hopping across alternate universes and dimensions, where worlds are filled with nightmarish creatures, a parallel timeline where the Apocalypse happened, or where everyone is animated and the creatures are evil real estate developers in costumes. Below are characters from alternate universes, terrible futures and parallel timelines.
Universes with their own pages
The Bad Place
Portrayed by Yadira Guevara-Prip
First Appeared in "The Bad Place" (S13, E09)
A hooded figure that menaces and kidnaps Sam and Dean. She is The Bad Place counterpart of Kaia Nieves. At the end of "Wayward Sisters", she escapes to the primary universe.
- Blade on a Stick: Her spear has a mysterious power that both the heroes and villains seek after in season 14. Apparently, it is powerful enough to wound an archangel.
- Decapitation Presentation: The Winchesters and Jody find the bodies of vampires sent to take Kaia's spear brutally mutilated, with their heads impaled on spikes.
- Dream Walker: Like her counterpart, she is a dreamwalker and had shared visions with her their whole life.
- Commonality Connection: Averted. She immediately rejects Alternate Michael's offer to join his army by virtue of both being from alternate universes.
- Enemy Mine: Briefly cooperates with the Winchesters and Jody to fight off monsters sent by Alternate Michael to take her spear in "The Scar".
- Evil Doppelgänger: To her main counterpart.
- Killing Your Alternate Self: Done at the very end of the episode Wayward Sisters.
- Lady of War: Her fighting style is very graceful, accentuated by her wielding a spear.
- Villainous Rescue: As Jody points out, she doesn't have a reason to save her and the Winchesters from the vampires sent by Alternate Michael after freeing herself from their captivity, and yet she does.
The Scooby Doo World
- For more tropes on these characters, see here.
- Alternate Tooniverse: Though it starts gaining realistic physics the longer the Winchesters hang out with the gang.
- Bloodier and Gorier: When compared to one of the gang's more ordinary mysteries.
- I Am Not Shazam: Mystery Inc. is repeatedly and incorrectly called "The Scooby Gang" by Dean.
- Off the Rails: Due to the influence of a real ghost disguised as the Green Ghost and the Winchesters hunting it, the events of "A Night of Fright Is No Delight" take a much darker turn.
- Scooby-Dooby Doors: Characters are known to participate in these, including the Trope Namer.
- Trapped in TV Land: How the Winchesters and Castiel are able to access this universe.
- Unusually Uninteresting Sight: When the gang spots something utterly foreign to their kid-friendly world (such as Cosgood Creep's dismembered body) they cheerfully move on and search for clues.
Voiced by Frank Welker
The leader of Mystery Inc.
- Adaptational Badass: Outright tries to tackle the killer Green Ghost repeatedly, something he didn't do in the original episode.
- Badass Driver: Won a drag race driving the Mystery Machine against Dean's Baby. He's one of the only drivers to achieve this.
- Catchphrase: Uses "looks like we've got another mystery on our hands!" when the gang investigates Cousin Simple's death. Uses "Let's Split Up, Gang!" when they search Sander's estate.
- Freak Out!: When told this version of the Green Ghost is an actual ghost, Fred begins banging his head against a tree, complaining they could have been hunting actual monsters like Dracula.
- Iconic Item: His ascot is brought up repeatedly, and by the end of the crossover episode Dean has started wearing one too.
- Punched Across the Room: Courtesy of the killer Green Ghost.
- Rube Goldberg Machine: Comes up with a slightly more elaborate version of the one from the original episode to trap the Green Ghost.
- Unusually Uninteresting Sight: Acts casually when faced with the dead body of Cousin Simple, earning Sam's ire.
Voiced by Grey Delisle
Member of Mystery Inc. and Fred's girlfriend.
- Adaptation Relationship Overhaul: She's outright stated to be Fred's girlfriend in the episode, which was only alluded to in the original series, and expanded on in later episodes.
- Brick Joke: Dean expressed interest in Daphne in a season 2 episode, and it isn't brought up again until the events of the crossover, over 10 years later.
- Catchphrase: Says hers ("Jeepers!") when faced with the dead body of Cousin Simple.
- Freak Out!: When the Winchesters reveal the Phantom Shadow is actually a real ghost, Daphne finds religion, and immediately shows concern that she's going to Hell.
- Hotter and Sexier: Exaggerated and Played for Laughs due to Dean's crush on her.
- Kill It with Fire: Says this verbatim, directed at the Green Ghost.
- Ms. Fanservice: Was drawn as such during a Male Gaze gag with Dean.
Voiced by Kate Micucci
Member of Mystery Inc.
- Agent Scully: She strongly disbelieves in ghosts, and shoots down Sam's initial insistence that the gang is facing a real ghost until Dean and Cass convinces her.
- Blind Without Them: Averted, just like in the original episode. Her glasses frost over due to a cold spot, but she rubs the lenses.
- Catchphrase: Uses hers ("Jinkies!") when faced with Cousin Simple's dead body. Dean also uses it the following episode to tease Sam and his kiss with Velma.
- Crossover Ship: An In-Universe example. Velma almost immediately begins crushing on Sam, but it's one-sided.
- Freak Out!: Downplayed. When everyone has one over the revelation that the ghost they are facing is real, Velma's only reaction is quiet confusion.
- "Scooby-Doo" Hoax: Mentioned by her when she tells Sam this is the kind of monsters Mystery Inc faces: unscrupulous real estate developers in rubber masks.
- The Smart Guy: As usual.
Voiced by Matthew Lillard
Member of Mystery Inc and Scooby Doo's best friend.
- Amusing Injuries: Subverted, as Shaggy actually breaks his arm after falling off a drainage pipe.
- Big Eater: One of the most infamous big eaters in animation eats a Dagwood Sandwich with Scooby Doo (and Dean) in the malt shop.
- Call-Back: When he breaks his arm from falling off the drain pipe, he angrily points out he survived a fall from a bi-plane with no injuries (back in "What a Night for a Knight").
- Cassandra Truth: When the gang are told they are facing a real ghost and they promptly have a Freak Out!, Shaggy and Scooby tell the others they were right all along and real monsters exist.
- Cowardly Lion: Despite being terrified of the Green Ghost, he goes back to rescue Castiel from it, who still thinks it was a person in a costume.
- Lovable Coward: Although he's usually scared of humans in monster costumes, he's justified here since he's faced with an actual ghost.
- Precision F-Strike: During the gang's mass Freak Out!, Shaggy uses "freaking" as a substitute for the F word.
- Valley Girl: Like, a male example of Hippie Speak. Still doing it fifty years later, man.