Marvel Animation has shared episode descriptions for the entirety of What If...? season 3 and those reveal Mysterio's surprising role in the series, The Hulk's transformation, The Watcher's fate, and more. What If...? returns with its third and final season this weekend and Marvel Animation has today shared the episode descriptions and credits for every episode.There are some significant reveals here, though the biggest is Mysterio's role in "What If...The Emergence destroyed the Earth?" With the planet no more, it appears Quentin Beck finds a way to take charge of what's left; could a Spider-Man: Far From Home retcon be in the works establishinghim as a Multiversal threat?We wouldn't bank on it but in this reality, he must have survived the events of that movie and become more than just a con man out to steal Tony Stark's technology.Beyond that, most of these episodes sound like fun, throwaway adventures and a couple really stretch the "What If...?" premise. However, the final two epi...