Ruiz Velasco is another of Guillermo’s go-to guys for concept art, working close with “el maestro” since HELLBOY II: THE GOLDEN ARMY in 2008.
DELTOROCON has an exclusive gallery of Ruiz Velasco’s PACIFIC RIM concept art! Check it out below!
Also, here is an excellent video featuring Ruiz Velasco’s work on HELLBOY 2, showing his concept art versus the rendering in the actual film
Hellboy 2 available on Blu-ray/DVD from Universal Studios Home Entertainment
You can learn more about Ruiz Velasco on his official blog: http://fruiz-fruiz.blogspot.com/