[1st] Demens

Demens used to be a very kind and happy pony. He was also a diligent student who wanted to know every single spell that existed and it came out he was pretty good at it. Because of that, he drew scientists' attention that were supposed to let him do some tests. When he was 6 years old, the same scientists captured him and conducted experiments on him. They implanted him a secret part of an extra-ordinary DNA that had belonged to a powerful wizard and later erased his memory. In the end, he became a walking experiment on his own. After their interference, he was learning new things a lot faster than his classmates but no-one was worried. His childhood friend was called Sakura (AgeeAge's OC). They were best friends and, when they entered a teenage life, they became cute lovers. When he was 20, his ambition became too big and it caused that then he decided to learn back magic and he was getting extremely good at it. Not long after that, he lost control and his personality changed. He could barely remember the past and his lover - Sakura. She was absolutely terrified but never stopped loving him. Now he's a twenty-five-year-old powerful wizard and he lives in a separated building and is under the control of psychiatrists and the military. His magic is almost as strong as Sombra's magic and because of that, his horn is secured. Otherwise, he could easily get out of this place. When Demens is getting angry his dark side takes control of him. He cut the cutie mark of his flanks on his own. Today the only things he remembers from the past and never stopped loving are his plushies.

Backstory based on AgeeAge's idea, edited by starmoonlightfox (me)