My take on a possible Darkin.
Because a kid downvoted the first thread and afterwards the second thread and again the third thread and again the fourth thread without no reason (Haters gonna hate) and the threads literally disappeared, I'm posting this a fifth time again. And the ones who downvoted it, here a message: Do it as much as you want, I'll post it again and again.
Good day, I'm a desperate League of Legends player, artistical hobbyist and Custom Champion Designer. While I'm loving to create a new Champion out of nothing, I do also love to draw him, even though it's just with a pencil.
However, one of my first Custom Champions is a Darkin who has two forms, the human form and the Darkin form. But since two weeks I've started to experiment with Zbrush, a program that has been also proven worthy by a new Rioter (Who also was on a presentation and showed Singed and Heimerdinger, how detailed and lovely they look).
Because I wanted to try it out, I experimented with it. I watched some couple tutorials and got my fingers on it. I started immediately to make the Head of the Darkin. His appearance is a bit similiar to Aatrox, but he's a bit bigger, a bit wider and has horns that comes out of his mouth. Half of his head is covered by a small helmet that actually looks like organic. Because he has extremely big wings that almost covers his body and aren't made for flying, but rather smashing the enemies with it - his horns had to be made looking forward and not backwards or in the air.
Here's my take on a possible Darkin. Mortalis, the Twisted Darkin.
Beware, I'm not professional and this was my first try on everything, I didn't even try to make something different to experiment with.
Mortalis-Head in front: http://halfsteps-neverworld.deviantart.com/art/Mortalis-Front-Head-433656018?q=gallery%3AHalfSteps-Neverworld%2F48121102&qo=13
Mortalis-Head on the side: http://halfsteps-neverworld.deviantart.com/art/Mortalis-Side-Head-433655996?q=gallery%3AHalfSteps-Neverworld%2F48121102&qo=12
I'm currently working on the whole body, but damn.. it's hard to make wings...