I have been working on an MLP:FIM original character. Part of the reason that I decided my character would typically wear a dress is because I haven't been able to decide on a cutie mark. The character wears clothes to cover her "blank flank". That has been bothering me some because I didn't want to step outside of the in universe rules with the character. It's the reason she is a unicorn instead of an alicorn
. So yeah, an adult without a cutie mark? It doesn't really work with what we have seen with the show, right? Well... not entirely true it seems. http://mlp.wikia.com/wiki/List_of_ponies
this is a list of all known ponies. While it doesn't tell us all the cutie marks, it does describe several, and more importantly, it tells us who doesn't have a cutie mark!
Burnt Oak, Chilly Puddle, Flounder and Forest Spirit. According to mlp.wikia, these ponies do not have cutie marks. I think there are more, but I stopped checking there. Eiffel's cutie mark isn't visible in his picture but is briefly seen in the show making this an oversight. Candy Mane has no visible cutie mark. It was stated that in one instance this is an oversight, but she has been in several episodes where this is not addressed.
I was watching "A Dog and Pony Show" and was surprised to see that Sapphire Shores didn't have a cutie mark. According to her wikia page, it was an oversight and her toy design has one, but as the quote below shows, it is clearly not the same pony.
"G3 Sapphire Shores also has a seashell cutie mark while G4 Sapphire Shores has no visible cutie mark due to a design oversight, though the mystery pack toy line depicts G4 Sapphire Shores with a seashell cutie mark as well. It is also worth noting that the toy is a Unicorn and not an Earth pony
So that brings me to my point. Can an adult pony not have a cutie mark? You get one when you discover your one true talent. Is it possible that even an extremely successful and well known pony could not have a cutie mark? You would assume that her cutie mark would be related to her eventual occupation, but that may not be the case. And what about the other ponies who apparently don't have cutie marks? Is it possible for a pony to never get a cutie mark, ever? Is the cutie predestined? Meaning that if you take a different path in life ( Like the CMC are trying to do? silly fillies
) it will never appear? If Applejack had never seen that sonic rainboom and realized her place was at home and instead stayed with her relatives, would she have never gotten her cutie mark?
Summarizing question: Is it possible to have an adult pony without a cutie mark, and are the predestined? What does everypony think?