As Downey Jr. arrives to unveil all of the cast’s chairs in one empty studio, there’s a strategically placed sign on the wall. Hovering over Quinn’s chair is a sign that reads “Fire Perimeter: Keep Clear.”

First Steps' titular heroes are officially in Avengers: Doomsday, where they will inevitably face Robert Downey Jr.'s Doctor Doom

Chris Hemsworth’s Thor, Anthony Mackie’s Captain America, Sebastian Stan’s Bucky Barnes, Tom Hiddleston's Loki and Paul Rudd’s Ant-Man are all back in the “Avengers” ensemble.