Early on Tuesday morning, Ryan Reynolds ignited speculation that Deadpool would finally get his dream and share the screen with the Avengers, when he posted an Avengers logo that had been vandalized with graffiti (something Deadpool would do).
Sources tell Heat Vision that yes, Deadpool will appear in Avengers: Doomsday. (Don’t expect him to actually be joining the Avengers team, though.)
He’s going to side with Doom and then betray him in the end methinks. Or he will be used to kill off various characters in the Fox/Sony stables as well and maybe even some MCU so they can recast.
Just my thoughts.
Or it’s a minor cameo or end scene credit that doesn’t really affect the plot in any meaningful way.