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.”

Doomsday' cast was revealed, with Fantastic Four, X-Men and Thunderbolts stars, but few of the original stars.

Robert Downey Jr. returns to the MCU with other confirmed actors including stars Chris Hemsworth and Tom Hiddleston, 'X-Men' stars like Patrick Stewart and Ian McKellen, and a good chunk from the studio's 'Thunderbolts.