Twilight theory

I think that the Twilight are the species that are bodys without souls. Now your probly wondering where i got this from? Well, in TP, if you go near a mirror in wolf mode, Midna has no reflection!

okay, first of all, I'm pretty sure you meant the twili, right??

And I was ok with your theory until you explained your "evidence".
I mean, wth don't soulless beings have reflection?? That makes no sense, if you can see them and your mirror is good enough, they'd have reflections...

Like Smertios said, I think you mean the Twili. And no reflection? Who cares its a video game.

By "mirrors" you mean the mirror in Link's basement and the ice near Zora's Domain, right? Hm... Well, Midna does seem to be rather immaterial, so perhaps that's just what they are? Maybe after spending so much time in the Twilight, their ancestors evolved in immaterial beings.

You might also want to notice that, when Midna is not riding you in wolf mode, she still shows up in your shadow. It sounds like an Easter egg that indicates she is of a different reality, rather than suggest she is soulless.

Notice how Midna can't go into the light until Zelda uses some kinda wacky magic on her? a reflection is the bouncing back of light. Even with that magic Midna is of sort of and opposite to Hyrule and that realm. Hyrule hase much light and little dark viseversa in the twilight realm.

Midna and link can´t be seen, remember? during the first part of the game... maybe the developers just forgot to add her then...