Rob McElhenney popping up in Deadpool 3 opened a world of endless possibilities for Always Sunny fans, because, in the multiverse, anything is possible.
What Does The Always Sunny Fandom Want To See In Rob McElhenney’s MCU Debut?
Given the casual banter between the two friends, Reynolds might be a good fit for an It’s Always Sunny in Philadelphia cameo (or recurring role).
This revelation led It’s Always Sunny in Philadelphia fans to post about who they want him to appear as in the MCU.