>>42494108
She's responsible either for creating or finding baps. She has a much closer, more familial or cultish relationship to them than Celestia does the Royal Guard.
She's a warrior princess; this is backed by the comics more than the show.
She has an affinity for creatures of the night, basically the same as Fluttershy's power but for nocturnal animals.
Although it's canon, the show didn't expand on her retention of NMM's powers: shapeshifting, and turning into a cloud. Many fics add the ability to shadow-walk as an alternative to teleportation.
Treating the sky as her own personal canvas for art or trolling.

Less directly connected to canon, she has an affinity for fae/occult elements, can reach the fairy realm or summon demonic entities, communicate with them. More canon, that she's an expert at dark magic, and has the strength to not be corrupted by it (anymore).

The canon ones are pretty obvious. That she has a non-nonsense attitude and not much patience (except for foals). Strict and dutiful for things related to princessing, but playful and relaxed outside of that. And a bunch of the stuff from >>39864661