Name: John "Anonymous" Doe (Real name: Unknown. Nickname can be further shortened to "Anon")(If you have ideas for better names, I'm all ears.)
Gender: Male
Home Continuum: MLP:FIM
>Species: Pony
>>Subspecies: Unicorn
Age: Mid-twenties
Department: Department of Floaters
Talent: He has mastered a memory-wipe spell that can be focused into the obliteration of specific memories. Applications range from a Bleeprin replacement when used on self, to a replacement for the Neuralyzer. See history.
Appearance: Green with a black-question-mark cutie mark and emerald eyes. His mane and tail are both made up of short black hair, cropped short.
Personality: Anon is a lot more easygoing than Cheesy, being the optimist to Cheesy's pessimist and the jokester to Cheesy's grump. He's also kind and caring about his friends- although he can be a total ass until you win his trust.
However, when Anon gets angry, it's an entirely different kind of rage to Cheesy's fiery fury. He becomes cold and calculating, a hunter with the source of the anger having a large target painted on his back. And he won't stop until the target is dead...

Okay, maaaaybe that was an overstatement, but that's what he'd like to happen.

History: All that is known for certain is that an unnamed agent saw a bright red light flash from behind a closed broom closet while walking down the hall. Inside was Anon and a rapidly-closing plothole. Unfortunately, it was later gathered that the bright light was a misfire of Anon's memory spell, and the result is best explained by referring the audience to the case of Gilderoy Lockhart.

The PPC didn't bother attempting to restore Anon's old memories, and instead trained him to be an agent.

(This was inspired by an old idea for an ask blog I had, and modified to be more of an author-insert.)