Ash Bright

A longtime ago in the noble families of canterlot was born à little fillie, who seem like a heart pony. He name was Ash Bright, and he was in fact an unicorn born with a horn little like a bump in the head, who was called "Little horn".
His nickname and his deficient horn bring him bad eyes and mockeries of his comrades, neigborhood  and shame into his family. he was unable to practice magic, because nothing spell out of his horn. He passes his childhood bullied by many people around in the bourgesie of canterlot, considered more like a earth pony than a true unicorn, and his parent looked him poorly.
During his teenage phase, he took some jobs like a earth pony, even if he didn't have the strengh of this kind. it was during one of them, when he was burried under ton of stuff after a little accident he discovered the nature of his magic. He couldn't glow, but still his power was here, and nobody even him couldn't see it. So he come to studied magic (secretly after some mockery of his entourage) and began to use the telepathy. So he could profit of this invisible magie to take revenge on thouse who bullied him, even his brothers and sisters. He stole back everything they took of him, still playing the weak unicorn who lived like a eath pony. He played with his magic to act like he was phisicaly more stronger. a few years passes when he savored his petty revenge,when one day, his secret was discover by one of her brothers who spyied him during his secret lecture. The rumours spread so quicly around, if his parents saw him surprised and happy of his new, all thoses who were victimes of his trickeries look at him more badly, and became more enemies, even his brothers and sisters. So he became the scape goat of many things he did not. Finally enough of this life, he humiliated his brothers and sisters and last time in public before living the his family  and the city. So he traveled in equestria, town after town, playing of his magic tricks to survive. When he arrived to Manehattan, he used his invisible magic to steal money. But walls haven't only ears and little horn unlucky was saw by another thief steal a jewel of his comrade. Later the imprudent fool was captured by a group of scum was bring in a deep place of the city, and was at the mercy of a group of hidden Batpony and "dark" unicorns. His invisible magi and his little horn was the key to his mercy. His only way to survive was to work for them. maybe a few mouth or years passes when he began to be at their service, but he began to built a reputation unlike his elder life in canterlot. His solitary stealh became later more organised burglary, and finaly he gain a place to his new "familly". His ancient kidnappers became his friends and soon his brothers and sisters. But one day, to finalise his initiation he should accomplish one special task: go back  canterlot to steal a spellbook in the royal library, the goal of this quest was to free Nightmare Moon of her bannishement. Annoyed but at least determined, he went back to his homeland, ready to steal one last time over here. Unlucky, one of his Bright brother who becomen a royal guard some years ago , saw him fly away and tried to arrest him in vain. When little horn came back to the gang, his quest fufilled and recognised by the all in his new "family", he was ready to be a shadow pony. So they proceided to do the ritual, and make appears a shade who trying to posess him. He was resolve to receive his gift when the royal guards, who went up the track to their hideout, try to arrest them. the fight began and Ash, interrupted in the middle of the ritual, was petrified with the shade. So the statue of the dishonnored Bright were bring back to the familly, who let him to celestia for many centuries. Until one day, when the stoned shade felt the return of nightmare moon, he used all his culminate rage to be free . Those to be seem an red-burning-eldritch-pony screamed in the night, bursting and raging like a mad dragon searching vengeance in canterlot. But celestia and the royal guards fighted him back, and he was forced to run again, aweaked  and tired by his fight. So he fled away, trying desesperatly to reach his nigmare sovereignWhen he came to help Nightmare Moon, it was too late: the Mane 6 defeated her. His last effort being vain, he finaly falled down. He lost everything: family, friends, life... nothing mattered for him at least. Unable to fly again andback to his old "Ash" form he tried to reach manehattan when he recovered enough to walk, but the time passed and he doesn't even reconise his old city. Scared by his all this changes he run back to the Everfree forest, where he live alone, sleeping sometime in the old ruin of the royal castle to read old stories. Sometimes we could see the mysterious red shape of a distant "earth" pony come to ponyville, and rumors say when he accrosed the place, somethings disappear without he does anything.

Ember Bright is calm, distant and careful. he prefer exile himself of the people. its serious air make him intimidating to the other, but he preferto be sneaky.
It arrive to him to be emotionnal and grateful (like the day he cried when rarity given to him a piece of fabric like cloac for a few bits, since he is grateful to her) or when he can express something without fear to wake his "other-self".
when somepony get annoy him, he prefer take some revenge quietly to satisfied himself. For him it's always better than finish to be anger and turn mad and be ready to explode everything.  he like when he can have "justice" even in revenge. He dislike to go in Canterlot and he hate the bourgeois of this city, especially his Bright familly he suspect to be always here after many "years".

He hide himself under his red cloak to hide his littlehorn and maybe confuse everypony about what is he really ( is it a earth pony ?  a unicorn ? a pegasus ?). He use his magic to trick the other, like use levitation to seem stronger or fly with his cloack to make wings and levitate (this trick ask him more energy , it is why he prefer to walk, pretending to be like scoolatoo).
But he try to limit his utilisation since he noticed his corrupted power spread high of heat, fearing to lose controle of his power and accidentally burn or melt any object. But the worst thing he don't want to lose control of himself to not unleashed his other-side, risking to expose himself to everyponies and be saw like a monster before get blasted out by the same power which vainquised his sovereign Nightmare Moon (this day he didn't saw Luna survived to the power of friendship, since it was traumatised by Twilight and her friends).

Sometimes he talk to his other-side, giving the impression to be crazy. When he turn a unleashed himself, he became more malicious, arrogant and manipulator when he is calm. But he became quickly anger when we confront him and don't hesitate to use his power in any occasion. He seem like a mix of a dragon and a unicorn, for someponies we would compare this to a alicorn or Nightmare Moon (bur more ...red), but the eldritch creature seem to not control his own power when he burst of rage.
When he stay calm but still bad he can use his corrupted magic to make mirages and lure his prey, searcheing to capture them and corrupt them, promising glory fortune and good company.
However, this trick his a way for him to be more close of his subject, wanting of them to be a family.

Ash doesn't have what we could really call "some friends", but rare companion with who he shared something. He keep his proximity despite his friendly atitude to them, fearing they find out about his past...

. Ash Bright (or Little horn): his body is red and his mane is cinder and look messy. He size like a normal pony, but he seem light. His horn is so little like a a bump than his hair hide partially it. he bear a big brown hat to hide his horn, and his body under a old cloack under another red cloack (or maybe a piece of fabric quickly made by rarity) . his bleu eyes give him a look calm but pretty serious. his magic seems not glowing like any unicorn, and he use it to fake his strengh. he bears browns "gloves and boots" to his hooves

. Burning Bright: When Ash  turn to a Eldritch pony his body grow up and darker and his mane goes a black smoky mane, his eyes turning to a burning yellow, and and canine go sharp.
His horn become much longer but evolve from red to the yellow. a black pair of soming wings appears of his body. his magic glows gold and black like flames. his cape (or piece of fabric) to a something more royal but still lightweight. He seem like a mix of a dragon and a unicorn, for someponies we would compare this to a alicorn or Nightmare Moon (bur more ...red), but unlike them, The Eldritch pony cannot control correctly his power, making his illusion exagerrated and his spell to dangerous tou everything around him.