©Armand Serrano/Redeemer Films.
This artwork is done in Photoshop and if you want to see the step-by-step process for this, check out the Character Design Blog. Also featured there is an inteview and a few more artworks.
On another note...
Ladies and gentlemen! my good friend MARCOS MATEU just uploaded his long awaited blog. Check it out, it's amazing! Click here to see Marcos' blog.