Name: Princess Omina
Species: Neon Rainbow Crystal Changeling Alicorn
Mother: Unknown, Speculated by Celestia to be a Neon Alicorn
Father: Unknown, Speculated to be a Crystal Changeling
Cutie: Rainbow colored black hole with a stream of white light coming out of it

Bio: Abandoned bastard child of two unknown creatures, Omina was found by Twilight Sparkle in the Everfree forest. Twilight initially thought the odd appearance that Omina has was caused by poison joke and tried to reverse the spell, only to have the magic consumed by the foal. Twilight then took Omina to Princess Celestia who, along with Luna, raised Omina.

With her uncontrollable ability to absorb magical energy from nearby sources, Celestia and Luna agreed that it would be the best for everyone if Omina was put into a catatonic state and sealed away. With help from Zecora, Celestia was able to make a tea that could put Omina asleep for long enough to cast an encasement spell, forcing Omina into a deep slumber inside a crystal under neither the castle.

Even though it's a joke, it still hurts my eyes.