With Ant-Man working its way through a series of complex underground tunnels at theaters, people are beginning to wonder about Marvel’s pint-sized hero. For instance, who will he be going tiny toe to tiny toe with in his forthcoming feature film on July 17th? Well, we’re here to help educate you by introducing you to Yellowjacket, a.k.a. Darren Cross. Played by Corey Stoll, Yellowjacket is a billionaire industrialist turned megalomaniacal madman who finds himself at odds with both his former mentor, Hank Pym (Michael Douglas), and the hapless ex-con who has replaced him, Scott Lang (Paul Rudd). In this exclusive new featurette, the cast discusses what makes Darren Cross tick — and shows off Corey Stoll in those sweet, sweet motion-capture pajamas. Honestly, Marvel should just sell those at Comic-Con…

We also have a brand new poster for your viewing pleasure, featuring Yellowjacket in a combat-ready action pose.

And for something far, far sillier, watch me play a little game called “Ant Fact or Man Fact” with the cast of Ant-Man.

Ant-Man opens on July 17, 2015.