Meet Aylis, the Guardian of Healing.
While originally a unicorn, he fell asleep one evening and had a very vivid dream. When he woke, he could not remember the dream, but he did have a new form. His appearance is generally that of the above picture - a pale-skinned youth with a very tiny unicorn horn mostly hidden by his pale hair. Said hair has a clump of rainbow coloring. His hair, and the rainbow scarf he constantly wears, echo his mane and tail as a unicorn.
He can still transform into a unicorn, but it takes a lot of energy, and he doesn't really like to do it. His talent lays in bringing things back from the brink. People, plants, animals, you name it. This has made him a capable Healer, although he tries to solve ailments in the old-fashioned ways before using his powers. Because of his equine origins, he has enhanced hearing and scent, and not-so-good sight. The gods that chose him fixed his eyes for him, though, so he doesn't wear glasses unless his power is nearly depleted. Of course, he doesn't know that's why he sees better than he should be able to.
When it comes to other people, Aylis is pretty easy-going. Other animals too. Vampires, humans, faeries, spirits... anything really. He tries very hard to get along. His horn is a dead giveaway as to what he is, though - and that has earned him a very firm escort out of town more than a few times.
He mostly wanders around and helps people who need it. Since he eats plants [being an equine] he doesn't really have to pay for food. He can just go outside, pluck some grass and flowers, and make himself a salad. What he likes doing, though, is following people in trouble. If he notices someone sick, or angry, or arguing with someone, and he's close enough, he'll follow them to see if they need his help. If they do, he'll step in. If they don't, or end up resolving it themselves, he'll slip away.
Noteworthy character-wise is that he's gay. He doesn't particularly look to women as companions, although he has no problem treating them so long as they keep their hands off him. He might find Theodore irresistible actually. Has a bit of a thing for 'dark' boys/men, since he is by nature a creature of the light.
Oh, and in unicorn form, he has all-white fur, and a spiraling, pale-rainbow horn. His mane and tail are pale gold with rainbow streaks, and his eyes are pink there as well. He doesn't have a beard, though - as he's too young for it.
Kit the Coyote says: "He likes 'dark' boy's does he?" Checks the leather bindings wove into his tail and adds a decorative colored ribbon on top and gives Aylis his best 'come hither and kneel at my feet' look