Yellowjacket

Darren Cross

Played by Corey Stoll

Darren Cross is a scientist who took over Hank Pym's company after Pym's departure and spent years trying, and failing, to safely replicate Pym Particle shrinking technology for military applications. Desperate to prove his success, he completed an unstable version of the technology called the Yellowjacket suit and attempted to sell it to Hydra remnants before being stopped by Scott Lang. Read more →

First turns up in Ant-Man.