These are a few teasers to promote the launch of Nick Spencer's and Riley Rossmo's "Bedlam" comic series a few years ago.
The idea with these teasers was to represent the duality of the main character being a reformed psychopath, so we went with an inkblot-style incorporating a current view of the character, mirrored by his super-villain former self.
When assembled with the characters facing each other, the mirrored cityscape becomes an image of the main villain's (Madder Red) mask. You really get the idea when the color is inverted.
Pencil, ink washes, and plenty of Photoshop.