Beware of unmarked spoilers
- When asked about this in a Reddit AMA, Steve Loter said that there are plans for something like it, but it's too early to say anything else.
Heroes:
- Kamala Khan/Ms. Marvel
- If she finds out about Adria's dislike of Joisey, she'll be unimpressed by that.
- Miles Morales/Spider-Man
- Doreen Green/Squirrel Girl
- The mascot of Lunella’s school is a squirrel. Odds are Doreen is already attending that school.
- Going off this, the person in the mascot costume we've seen occasionally is Doreen who wears the costume all the time to hide her squirrel-y features. Lunella will help give her the confidence to come out of her shell.
- T'Challa/Black Panther
- Princess Shuri/Black Panther
- Maria Hill (Cobie Smulders is set to make a guest appearance, she could reprise her role from the Marvel Cinematic Universe)
- A woman in a SHIELD jumpsuit was seen in a preview for the season. It is very likely this is Hill and Smulders will be voicing her.
- Confirmed.
- A woman in a SHIELD jumpsuit was seen in a preview for the season. It is very likely this is Hill and Smulders will be voicing her.
- Wade Wilson/Deadpool
- Deadpool will wisecrack about his own ill-fated cartoon while warning Lunella that her show could be next, given the unfortunate fates of some of Flying Bark's other animated projects, not to mention the fate of another diverse Disney Channel series. Much to Wade's chagrin, Lunella will have no idea what he's talking about.
- Gwen Poole/Gwenpool
- Eric Brooks/Blade (Wesley Snipes is also making a guest appearance, so depending on how the rights are handled, he could be reprising his role from the live-action films.)
- Basically any or all of The Avengers, given that they were mentioned in the trailer.
- Luke Cage
- Monica Rambeau/Captain Marvel/Pulsar/Photon
- Matt Murdoch/Daredevil
- Amadeus Cho/Totally Awesome Hulk/Brawn
- Ororo Monroe/Storm
- Moon Boy, Devil's original partner from the comics, could appear in a flashback.
- The Runaways, including Old Lace who will make her animated debut and become a fellow dinosaur ally for Devil.
- Kid friendly versions of the Livewires, given the number of Marvel deep-cuts the series has made so far.
- Sam Wilson/The Falcon/Captain America
- Confirmed. Sam, specifically as Captain America, makes a voiceless cameo in the episode "Today, I Am a Woman".
- Tyrone Johnson/Cloak and Tandy Bowen/Dagger
- Layla El-Faouly/Scarlet Scarab given that May Calamawy is in the guest cast.
- Ironheart/Riri Williams
- There will a Bait-and-Switch when she first appears, with Lunella and the viewers being led to believe that Iron Man is making an appearance before the helmet comes off and reveals that it's actually Riri.
- One of the White Tigers, either Hector Ayala, Ava Ayala or Angela Del Toro.
- Nextwave will appear in an episode where Devil is Brainwashed and Crazy or framed for a crime committed by an evil clone, and Lunella teams up with Nextwave to save him. The team will no doubt become Lighter and Softer because this is for families/kids, but there will still be a decent amount of the book's signature bizarre humor.
- Perhaps while at it, the clone is created by S.I.L.E.N.T. (as opposed to their leader)?
- Given they'd be decidedly family-unfriendly characters in a series which is (and the witers don't decide to), perhaps a Runnin Gag could be members of Nextwave getting cut off before they can say or do something that can only be done with a TV-MA rating (swearing, gorey violence, sexual acts). In essence, they'd be presented as Genre Refuges from a Harley Quinn (2019)-style series.
Villains:
- Wilson Fisk / The Kingpin
- Lonnie Lincoln / Tombstone
- The Wrecking Crew
- Arcade
- Princess Fisk
- Thanos
- Doctor Doom
- Ultron
- Sauron: Makes sense for one archosaur to fight another.
- Stegron - For the same reasons as Sauron, only he's a true dinosaur.
- Any number of Symbiotes, given that one already appeared in episode 2.
- The Killer Folk, in a similar manner as Moon Boy above.
- The Pride
- M.O.D.O.K.
- The Roxxon Company
- Norman Osborn / Green Goblin
- The Hypno-Hustler
- Dirk Anger
- 1. She is a perfectly humble character.
- 2. She starts out insufferable, but gains Character Development that grows her out of such.
- Confirmed for Moon Dinosaur who is feathered as in the comics.
- And if she does switch bodies with DD as she does in the comics, it will be through some other means, not Inhuman powers.
- A description of an upcoming episode indicates w that Lunella and Devil will switch bodies thanks to an invention of Lunella's. Stand by for confirmation…
- Confirmed on both counts: Lunella is a human and her mind-switching with Devil is a mind reading device gone wrong.
- Needless to say, Mephisto, Doctor Strange, and other entities from the magic side of the Marvel Universe will show up.
- In the episode "Teacher's Pet", Devil's morning meditation tape mentions him and him alone being in control of his destiny. This may be foreshadowing.
- Confirmed.
- She could be trapped in another dimension because of her own portal generator like Abigail from Big Hero 6.
- There could have been a massive coverup courtesy of the government. S.H.I.E.L.D. could be involved.
- She was corrupted and turned evil.
- The Beyonder or a related cosmic entity could be involved.
- Lunella as a result of time travel.
- Jossed. Mimi is the original Moon Girl.
- Jossed.
- Calamawy voiced Fawzia in "Goodnight, Moon Girl", but it's still possible for Layla to appear.
- Also to Contrast Lunella being Moon Girl, this villain kid could be Sun-themed.
- OP also suggests they could be a white boy in contrast to Lunella's black girl.
- Also also: They'll also have an Evil Counterpart to Devil as well, perhaps a large primate to contrast with the former's saurian nature, and the kid and ape both hate one another unlike Lunella and Devil.
- Or maybe a saber-toothed tiger.
- This may have been confirmed in "Skip This Ad…olescense", as we briefly see a clone of Lunella (or perhaps the comics character of Devil Girl) with a darker colour scheme.
- A psychopathic villain who can be similar to Green Goblin.
- A Terrible Trio! They could dinosaurs like Devil, troublemaking delinquents with powers like the Rowdyruff Boys, three guys similar to Batman's Terrible Trio or a trio of Symbiotes similar to Venom and Carnage. The possibilities are endless!
- Possible Fourth-Wall Supervillain Breakers like The Beyonder.
- A vague authority as implied by The Beyonder.
- The Avengers
- Spider-Man
- Possible Variants of Moon Girl
- Moon Girl and Devil Dinosaur meeting The Avengers.
- Spider-Man, because of course an NYC-set show would have them.
- This may hint that Moon Girl and Devil Dinosaur takes place in The Marvel Cinematic Universe, which could make sense. Due to how the Avengers have retired and haven't done anything (besides Falcon, Hawkeye, and Hulk).
- This is complicated, however, with SHIELD having been long shut down by the time Wilson becomes Captain America.
- Devil's world
- The MCU
- Devil Girl's world
- Somewhere between dimensions
- Another DTVA show
- The future
- The past
- The Negative Zone
- Battleworld
With the second season, there can be possibilities on what kind of plots could happen in the second season.
- Lunella exploring the unknown universe she was transported to.
- The MCU Multiverse being explored.
- Lunella will meet Moon Boy, who reveals that he and Devil were former friends before Devil came to Earth.
- Lunella's Ship Tease with Brooklyn.
- Possible Threats who could serve as either the Arc Villain, Big Bad, or Villains of the Week.
- Lunella's relationship with her parents and grandfather.
With there being a Season 2 already renewed, there are possibilities on who could serve as the main arch-nemesis to Moon Girl/Lunella.
- Rachacha
- Karl Lykos
- Stegron
- Well, an AMA from the showrunner/executive producer stated that Molecule Man would be Season 2's Big Bad, and would appear in several episodes of the season.
- Likely confirmed, as the premiere is called "The Great Beyond-er!".
Well, she has helped Lunella by helping her charged up Aftershock during the first episode of the season currently is helping her take down the monsters.
Now that she and the duo (Devil and Casey) have rescued her. she will start/continue helping out Lunella and Devil take down supervillains that they will encounter.
Casey, Mimi, Aftershock, LOS— 307, and presumably Abyss are the only ones who know about Lunella's secret identity as Moon Girl, with the four keeping Lunella's secret to prevent Aftershock from blackmailing her in an attempt to hurt her family.
With Season 2's various plots since the cliffhanger resolved, people who become suspicious or find out about Lunella being Moon Girl could become a plot focus or maybe an arc during the season.
- Adria Lafayette
- James Lafayette Jr.
- Pops Lafayette
- Eduardo
- Aanand
- The Volleyball Team:
- Brooklyn
- Tai
- Fawzia
- Geri
- Since it is revealed at the end of "Teacher's Pet," that the Rat King survived, it is likely that he will return, and seek revenge on Lunella and Devil.