How do you imagine champions that were human once?

How do you imagine their human physical and mental features?

Sion, Karthus, Mordekaiser, Xerath, Nasus, Azir, Renekton, Cassiopeia etc?

XERATH

I imagine Xerath as mid aged, long hair (not too long, more like how Aragorn was in LoTR movies), in the beginning of turning white (not much though), blue eyed (I ironically make a connection with his arcane magic), short bearded, 1.80 meter (5' 11"), not slim, not necessarily handsome but above average. I dont imagine him as a model but I feel like he would be attractive and charismatic due to his unbelievable manipulating skills.

Like a less good looking Graves with a bit white hair, less tough, potentially less tall, and longer hair. His eyes are brighter blue though, like a sapphire.

Personality wise, I find Xerath as a even worse Petyr Baelish. People that were smart enough would be terrified to make a contact with him and fall within in his dark plans. In other say, he is 2 faced. When it comes to manipulate, there is no one nicer than Xerath. But when he turns his back, you can see your doomed fate in his face. He smiles to your face, and in the back, he looks at you with hatred.

Still, Xerath is not with full of hatred. If he saw someone need a help that was innocent, he probably would help. Because he can see himself in them (Just talking about human Xerath, Ascended Xerath is just a new personality).