Marvel Studios conceptual illustrator Andy Park has uploaded some more of his brilliant concept art for Joss Whedon's Avengers: Age of Ultron.

"And here are a couple more initial passes at the Ultron design done for Avengers: Age of Ultron as well as the approved design for Ultron Mark 1," Park wrote on his Facebook page. "I don't get to do the more robotic designs that often here given our resident robot experts in Ryan Meinerding, Phil Saunders, along with Josh Nizzi and Josh Herman. But when I do get a chance I just savor the moment. Too much fun!"

Check out Park's artwork below to see what Ultron could've looked like.

When Tony Stark (Robert Downey Jr.) jump-starts a dormant peacekeeping program, things go terribly awry, forcing him, Thor (Chris Hemsworth), the Incredible Hulk (Mark Ruffalo) and the rest of the Avengers to reassemble. As the fate of Earth hangs in the balance, the team is put to the ultimate test as they battle Ultron, a technological terror hell-bent on human extinction. Along the way, they encounter two mysterious and powerful newcomers, Pietro and Wanda Maximoff.