Vanny

Vanny is the main antagonist of the upcoming Five Nights at Freddy's game, Five Nights at Freddy's: Security Breach. First introduced in FNaF VR as only a voice and a mask, and later alluded to in FNaF AR via some emails, Vanny ended up getting the William Afton treatment of "we don't know anything really concrete about this character but we're not going to let that stop us," shooting her up to the same status as her sexypredecessor despite not even having an in-game appearance yet.

Basic Information
As she has yet to appear in a game, there's not really much known about her, but there's still some things we can pull from. Firstly, we hear her voice in FNaF VR, which you can achieve by getting her mask from the Corn Maze level in the halloween hub and completing the main game. Secondly, there's a few emails in FNaF AR which seem to be addressed to her, creating more material for fans to speculate over.

For more information, see her article on the FNaF wiki.

Twisted Freaking Cycle Path
As a follower of William Afton and the main antagonist of FNaF Security Breach, this comes with the territory.

Animal Theming
Rabbit costume.

Villain
Working with a child murderer, I'd say she qualifies.

Dominating
Her appearance in the trailer for FNaF Security Breach is fairly intimidating for the short time she shows up.

Duality
In two ways - one, fans speculate that William Afton/Glitchtrap is in her head due to how he's said to get his victims in FNaF VR, and two, a toy leak has fans speculating whether she and a night guard character might actually be the same person.

Girlboss
People are very excited to see her in action, despite the whole, well. Murder thing.

Mysterious
This is in part due to not having an on-screen appearance yet, but we know little about Vanny's history or what her motives could be for working with William.

Glowing Neon
Her suit's eyes glow an ominous red.

Purple
As a result of working with mister Purple Guy himself.