When it comes to Theodor-Phillip, it's important to separate what he *thinks* he is and what is actually going on.

He sees himself as this "Forest Merry Spirit", an eternal entity that possesses body after body and needs physical form as a vessel.
This is only a response to traumatic events he witnessed as a fawn. Many fawns lose their mothers at a young age, and Theo wasn't an exception. The picture of a dead doe he beloved shocked the guy, but he was still too little to proceed those feelings.
He just kinda... moved on. Surviving was his top priority, and slowly but surely the grief was supressed. That's when the whole Forest Spirit thing started.
Instead of considering himself an orphan on his own, Theo decided to be optimistic and say he's a child of the Forest. That is also the reason why he sees Forest as a female. Being her ambassador gives Brother Theo a meaning in life, which he otherwise would've lost long time ago. "What do you do if you *don't* make everyone happy all the time", right?
Of course he does not possess multiple bodies: it's just a dissosiation from fatigue he gets from time to time (it's not easy dancing that much!). He might even realize that. But what harm does that little play pretend make? So what if it's not real -- it sooths him and then he does good deeds to others.

In the end does ot really matter if you're a Forest Spirit or just some random deer?

Whoa! So... I'm not sure how I got here, and by *here* I mean this body, but I know it... carries some heavy burdens.
Me? Oh I'm just a humble Forest spirit. You know: the one deers feel when they dance, or have fun conjuring, or just lay next to each other. I consume those emotions. And I am so happy they exist. I'm sure the Forest herself is at peace as long as her residents are cheerful and carefree, for she could not have been created so magical and protected from the outer world otherwise. I know she wants her children to be happy, and I'm here to make her will come true. Oh, and yes, to me the Forest feels like a female, as... we were all born in it, don't you think? Anyway it's something on the spiritual level, I don't know how to explain it, and honestly? don't even think it needs to be explained!
So, whatever happened to this body I've been summoned to, must've been horrible. Its original owner must've lost any faith in the Forest. 'Don't want to think what they did to themselves, but... I'm its new master now. I will make sure the balance is restored: for each drop of sadness and despair spilled by this body I will make a whole pond worth of happiness, I swear. I love the Forest and I want her to be at her best.

...

Twin-Gods, I almost forgot! 'Don't know what the old master of this body called it, but you can adress me as Brother Phillip-Theodor the Fey. Or just Brother Phillip. Or Brother Theodor. Or the Fey Brother... Basically just however you want!

It all began with birth.
You saw your weirdness.
But thoughts were too senseless,
And it will be till death.

They call you "little light",
They think you're good and kind,
But can they see your mind?
I think, you even can't.

You're lost, you need some help.
Who can give it to you?
No one, before you too
Can see you're just a helve.

P.s.: It's my first poem in English [u can easily notice it ], but I tried to bring mystery to Asalia's story, later you'll be able to see it

"So, I slept for the whole day, because I felt bad. In the evening I woke up and found two lonely fawns. Of course, I came to them, it's my mission, I just wanted to make them happy. I danced, but suddenly I felt something strange in my /oh, sorry/ pussy. I was shoked! I jumped away and turn around. I was really shoked, when I saw the thing... It was DEER with his /oh, sorry/ DICK, he tried to put it inside of me! He came to me and tried again... Now he held me more tightly, I couldn't escape. There were two fawns and one adult deer, but they just watched. And what about me... I was too weak to scream, I stoped understanding reality... After all, deer went away, I walked to my home and fell asleep. I don't know, when will I wake up, but I don't think, it will be soon. I feel so bad again, the whole body is suffering from pain.
I have only one question: why? Why?! What did I do to this deer?"
P.s.: The story is based on real events, yeah. Deer came to my doe and his actions looked like /oh, sorry/ sex, meh. What's going on?? Look, I even screenshot this
http://imgur.com/gallery/IKAsz