Marvel surprised fans attending San Diego Comic-Con this year by revealing a new character for Avengers: Doomsday at the company's booth, of all places. On July 22, fans spotted the Latverian Witch costume on display. That alone was interesting, but then the costume began to change.

Fans returning to the Marvel booth, which includes a massive costume collection for characters in the upcoming Doomsday film, discovered the Latverian Witch was still there, only slightly different. Yesterday, the costume was swapped for a yellow variant. Today, the costume is purple. With Marvel Studios' huge Hall H panel set for tomorrow, fans anticipate a fourth and final outfit change for the Latverian Witch. The change in colors suggests that there are actually multiple witches. But the question remains, who are they?

Fans have been asking that since the first Latverian Witch popped up at Comic-Con. As the characters have not appeared in the Doomsday trailer and fans only have the costumes to go on, theories abound with little verification. There are a couple major ideas, but they should be considered as something closer to hopes and dreams rather than actual possibilities for the film.

The first major theory is that the Latverian Witches are variants of MCU characters Doctor Doom has recruited into his service. Lots of names have been thrown around, but the biggest is Scarlet Witch, who died at the end of Doctor Strange in the Multliverse of Madness. The theory argues that the Scarlet Witch does magic and Doom has a history of using magic in the comics. That's about it. Another theory suggests that somehow the Witches have a connection to the Infinity Stones. This is largely based on the three colors we have seen so far, which correlate to three Infinity Stone colors. Again, this is really all there is to the theory.

There is also the very real possibility that the Latverian Witches are nothing more than nameless supporting characters with really cool designs. So don't get your hopes up that any familiar faces will be under those masks. Marvel will reveal more about Avengers: Doomsday and the future of the MCU during its Hall H panel on July 25, from 5:30-6:30 p.m. PT.