Scott Lang is Hank Pym's successor to the mantle of Ant-Man/Giant Man appears as a non-playable character in Marvel Ultimate Alliance 3: The Black Order.
Marvel: Ultimate Alliance 3
Scott have since joining the West Coast branch of Avengers. Upon learning that the Avengers Tower is under attack by Ultron, who has Infinity Mind Stone and unleashes Ultimo, which Iron Man tried sealed away, Scott and Hawkeye (Clint Barton) rushes towards their allies to help them against Ultron-infused Ultimo. With Ultron is trapped inside Mind Stone by Vision, Scott stays on Earth to clean other mess Ultron caused while returning to West Coast, while Clint stays with The Ultimate Alliance for their quest to find the remaining stones before Thanos does. However, Scott Lang's departure takes place shortly before Ultron has already made his last ditch on unleashing the Sentinels, which targeted the X-Men at their home base, Xavier Mansion.