Concept

Looked at naseers last drawings. His design reminded me of Lenny Kravitz for some reason. This is basically Lenny Kravitz (not exactly) with a spray paint canister.
Conceptual stuff Male.

Top right is Naseers design which i started off of. Working counter clockwise. The final design i came up with (bottom right), i think i prefer the most. If the protagonist looks weak but does something great, that great thing seems even greater.
Oh, and the reason most of the male concepts are dressed warm is i'm thinking Naseers story either takes place during a cooler season or in a cold place.

This is my favourite design out of the concepts below.

We can go with either a strong female protagonist or a weaker one. Although i prefer a weaker one for the same reason i preferred the weaker male protagonist.
Devils advocate?

First drawing of the devils advocate i did.
Then moved onto concepts.

I had the hardest time coming up with concepts/designs for this character. Maybe because we have free reign over the design. I suspect the other designers will probably have a hard time with this one too, maybe not.. probably not.
Tall and skinny or short and stumpy or human? I think the reason i drew the cloud of smoke in the first design is that, if the devils advocate is a mysterious ghostly figure we could have him gliding across the floor. Later in the concept i took out the smoke (animating the smoke would make it tougher?). He/She/It should probably have legs and feet. Still working on this character.
Thoughts and suggestions please.