Is Deadpool in Avengers: Doomsday ? Thus becoming the number one question Reynolds and Hemsworth have been asked pretty much ever since. Point: Deadpool Is in DoomsdayLook, why have Ryan Reynolds come in costume as Deadpool if he’s not in Avengers: Doomsday? So the only real reason Rudd would be aware of where this scene takes place, and why, is if it was in Avengers: Doomsday. Do you think Deadpool is in Avengers: Doomsday?