Page added to prevent flooding. This contains sandboxes in case new Witches or characters are introduced, and speculations and theories regarding to existing Witches. Please do NOT take it seriously for the speculations I made.
The theories below have not been proven yet. Please keep in mind that they are fanmade theories, and not official material.
Witches introduced or redesigned in Magia Exedra
Considering Gekidan Inu Curry has mentioned that Witches and Barriers that were once simply settings or concepts will be reintroduced to the game, we will get to see numerous Witches and even the minor ones getting revamped + having the Inu Curry style.
We have seen Suleika finally having a full appearance (Despite still lacking a Grief Seed design), and Latria and her minion getting a full redesign, even adding ORKOS to the once nameless Minions. Minor Witches from Oriko Magica - despite still don't have names - have designs akin to the Gekidan Inu Curry style.
Even existing Witches have fully revamped artwork too...
Witch of the Netherlands
Grief SeedNetherland Witch speculation by a-nima figure, link in description
The Grief Seed contains elements of tulips and windmills so it might be possible to guess what the Witch looks like.
The barrier might be tulip garden with windmills like how Netherlands is usually depicted, and the country is famous for these two elements.
Netherlands people speak Dutch, which is the third most-spoken Germanic language. Considering Witches in the original Madoka Magica anime are all German names, there is no doubt the Witch also uses a German name.
The Witch might have appearances of the above 2 elements or maybe elements linked to Netherlands Folklore. Of course, designing the Witch would need to prevent any controversial stuff...
Her Grief Seed made multiple merchandises, something that ONLY important Witches have.
Inversely, Suleika never received a Grief Seed design as of 2025...
Walpurgisnacht (The Stagecraft Witch)
If "Walpurgisnacht" is present in her Witch Kiss, then by common sense it should be her name. The truth, however, is NOT.
Warning, this section contains spoilers.
Assuming the "Walpurgisnacht is the result of paradoxes caused by multiple Homuras" theory is true, we might get to see Walpurgisnacht's true name in Runes, which might be "Homulilly".
Could Walpurgisnacht assume a stronger form in the movie? The production note DO say that if she is upright, she is using her full powers which would be more than just causing calamities.
Quitterie
Ah the Kyubey Witch, but Witches typically do not resemble ANYONE (although Witches drawn by Alina Gray usually contains parts of the original Magical Girl, such as hair). If a girl becomes Quitterie then she might admire Kyubey, agrees with his plans despite everything, or might even worship him like a god. The description says she believes she is still saving the universe so there is no doubt - in my opinion - that she is a mad believer of Kyubey.
IF she appears in Magia Exedra and the staff decides to change her category, I suspect her being the "Costume Witch" or the "Knitting Witch" might suit better.
Itzli
The Witch that was once speculated to be Mabayu Aki. However it should be noted that Witches having similar aspects to another doesn't mean they will become THAT Witch. For example, Konomi Haruna uses scissors and has tons of stuff to do with flowers but is NOT the witch Gertrud.
If Itzli has the ability to summon Witch specters (source: PMMM Slot 2), then the original Magical Girl might have tons of knowledge of Witches, and might have recorded them or learned their attacks.
Latria
Orkos' duty is "hound", which at first doesn't seem to be linked to needles, but taking a closer look at Latria's description says she was born love that surpasses even its instincts. Considering this, Orkos
Bovine Witch
The Witch from The Different Story and most likely the Drama CD 3. It looks like a minotaur holding an axe, but the cow is a decoy. Apparently it has more "screentime" than other nameless Witches so she might be very important.
Kaoru Maki's doppel ANTONIO is a minotaur with an axe, so it might be possible the Bovine Witch is the same as Kaoru's Doppel. However, her doppel uses flame magic while the witch doesn't.
Besides the Minotaur, Chinese myths has a creatured named the "Ox-Head" that also looks similar but also not quite.
A-Q
Warning, this section contains spoilers.
A-Q have been speculated to be Alina Gray by numerous players for the following (obvious) reasons:
He (?) greatly despises when someone compares him to Kyubey, saying it's a humilation to her identity and dignity, claiming he looks exactly nothing like him. Also cannot grant wishes like Kyubey.
Shows more emotions than Kyubey, not just physically (such as slamming his tail when frustrated) but also through words (joking about his greeness comes from plants).
Been in the Lighthouse Theatre before Name and Nighthawk does.
Claiming he once has been working in a groups of 2 and 3.
Occasionally speak English words (voiceover and Japanese subtitles).
Green cubes that resembles to Alina's weapons can be occasionally obtained by players.
Nighthawk
Warning, this section contains spoilers.
At the end of Last Bird's Hope, people are spreading rumors of the Nighthawk - the Runaway Doppel, which might link to her existence.
It shares its voice actress with Kuroe, whose Witch/Witch is Ichizo - the Nighthawk Witch, and has numerous similarities, mostly their doll-like appearance and dripping mud wings.
Observations
Magical Girls
Tsukasa and Tsukuyo, Azalea Sisters and Reira-Seika-Mito have fused Doppels. This could mean Magical Girls with strong bonds are able to fuse their Doppel but with greater side effects.
Witches
Only Gertrud is explicitly stated to care about her minions. Others are just fulfilling the Witch's purpose or even as obstacles or enemies.
Only H.N. Elly, Isabel, Walpurgisnacht, Homulilly and Neo Dorothy are known to have vocals. (In the concept arts, Elly and Isabel's dialogues are said to be spoken by their familiars (Daniyyel & Jennifer and Michaela), although Isabel's voice actress, apparently, IS credited as the Artist Witch, not her familiar.)
Only one Anja exists in the anime, and surprisingly there is NO Anjas in the Rebellion movie. (They DO appear in Rebellion. Thanks to TeresaFrog for providing me proof ;v;)
Post-anime Anjas appear as multiple individuals like all other familiars, but since Witches with NO familiars exists (such as Etteilla), could there also be Witches that only prefers having a single familiar, or familiars that are one-of-a-kind?
No Klarissas are found in Magia Exedra. I wonder why...
The "?"'s used on Walpurgisnacht's health bar are NOT in Runes, and "Daniyyel + Jennifer" is now "Daniyyel & Jennifer" for some reason. Perhaps the text file omitted punctuation marks.
All Daniyyel and Jennifers in Magia Exedra only have wings on their left.
Uwasa
Uwasas in Magia Exedra don't have their name listed in their health bar.
Random
Well, apparently Magia Exedra fans in Japan are frustrated by the fact Rena, Kaede and Momoko came BEFORE Sayaka, who is one of the most and MOST-EST important Magical Girls in Madoka Magica. Staff need to address this lol.