This is from last San Diego ComicCon, it's a a commission sketch, hb lead, pitt pens and warm and cool gray copics, and a little photoshop enhancement.
Esp. Esto lo hice en la pasada ComicCon en San Diego, es una commission sketch, hecha con puntilla hb, pitt pens, marcadores copic grises calidos y frios yyyyyyy un retoque en photoshop.