Following yesterday's "Ant-Man" promo art reveal, new images for another 2015 Marvel movie -- "Avengers: Age of Ultron" -- have made their way online via the Super Hero Hype forums and Comic Book Movie.

The artist renderings show Ultron wielding both energy and a menacing gaze, offering up some of the most emotive expressions we've seen from the James Spader-voiced villain. Two other images depict a brawl between the Hulk and Iron Man's Hulkbuster armor, and the batch is rounded out by a shot of a sullen Thor standing atop a pile of crushed Ultron drones and a roll-call-style team image.

"Avengers: Age of Ultron" opens in theaters on May 1, 2015.