Ace was born in a village not to far from magnolia but when Ace was only young his parents were taken from him because they practiced black magic, the people who took his parents were the towns men and viewed Ace as a danger but the townsfolk offered Ace 2 options stay in the village and die or leave the village and their people alone whilst living. Ace accepted the latter and fleed into the wilderness, he struggled a lot as he tried to learn magic for he was not able to so he could make a living but when Ace had nearly given up hope until he encountered a small dog was eager to follow him around every where, he named the dog Inu because it is a dog.
After a few months of travelling from town to town looking for food Ace and Inu were ambushed by Bandits as Ace put it. these bad people wanted Ace's money and his dog otherwise they would kill him and Inu, Ace said "No!" which made the bad guys angry and they went ahead with what they said and closed in on Ace, Ace's did not think to use his magic because he did not want to hurt them but Inu jumped in front of Ace and protected him but the little white dog was no match for the brutality of the bandits, when Inu was breathing his last breaths Ace absorbed Inu's soul in order to keep him alive which in turn granted Ace "Animal Possession" where Ace killed the bandits in rage and anger for nearly killing his only friend.
After a long time Ace was told about a guild called Fairy Tail where he could join and help people, Ace new that Fairy Tail was the place to go, he finally found the base of Fairy Tail, when he was 16 he found it hard to fit in with all the relaxed people but eventually he fell right into cracks of fairy tail and had the same reputation as everyone else did in the guild... being destructive.
After two years of Ace's time with Fairy Tail he left to train on Mt. Hakobe and said he would be back in 12 months and to send someone to retrieve him when that time was up. (I will pick up from here in IC)