Frank Grillo opened up about starring in Marvel and DC Studios films and revealing the differences between both universes.

Actor Frank Grillo is one of the few who has ventured across comic book lines to star in both Marvel and DC Studio projects. The actor played the role of Brock Rumlow “Crossbones” across the MCU and is now voicing the character of Rick Flag Sr.

"I just love being part of something in the embryonic stage," says the actor, who will reprise his role as Rick Flag Sr. in "Superman" and "Peacemaker" season 2.

Frank Grillo's role in Creature Commandos is just the beginning of something great for the DCU, and fans are making comparisons across companies.

Frank Grillo played Crossbones in a few notable projects (which are streaming with a Disney+ subscription), but he's also one of the actors who have worked with both Marvel and DC. And the 59 year-old actor recently explained why he likes the DCU