Seán has never had an easy life, to say the least. His mother died in mysterious circumstances when he was still very young, leaving him to be raised by a father who hated him for who he is and who regularly thrashed him for everything he did. Worse, he grew up in the outlaw settlement of Seawash, which meant there was no-one he could turn to for help and nowhere to go. Outlaws on the island of Viridis have no legal protections and are considered fair game.
Then he met his elder half-sister, who accepted him for who he really is and who took him into her home and her heart as family. Slowly, he began to find his place in the world. He found a girlfriend who loved him in spite of his dark past and his many scars, and he began to learn to love himself, too. Some darkness still remains, but it's fading.
Art belongs to jackiejackal Her post: http://www.furaffinity.net/view/16150871/ If you like this, please, please go and tell her. She did an amazing job with this, and she captured Seán perfectly with almost no information to go on.