Pairing Derpy with the Villian of the Rainbow Factory and Cloudsdale, White the Rainbow Factor.
Sometime after the event of White gaining a physical form to take control of Cloudsdale, event was known as the Lost Colors(Probably), White soon saw the wrongs he made and made a mends to the Princesses that he will try to be a good pony in order to keep his relationship with Derpy. So now White is one of the bosses of the rainbow factory and is Derpy’s current coltfriend.
White acts like a tough guy but when Derpy comes around he melts and enjoys her company.
Here is an old drawing of his full body -> mushindivinity.deviantart.com/…

White the Rainbow Factor/AfterVerse/Art (c) (me)
Derpy/MlpFim (c) Hasbro and