Marvel fans have been excited about “Moon Knight” for quite a while, and there are some popular theories that they are hoping will be confirmed. Ethan Hawke, who plays the antagonist Arthur Harrow on the show, was recently asked about cameos in the series.

Speaking on “The Tonight Show” with host Jimmy Fallon, Hawke addressed Mark Ruffalo's possible cameo and said that it would certainly be cool for Hulk to make an appearance. Ultimately though, he said that it’s likely untrue, because Ruffalo is a good friend of his and would have reached out to him to let him know.

Fallon then brought up the rumors surrounding the appearance of Mahershala Ali's Blade, but Hawke was silent and wore a suspicious expression on his face. He then confirmed that both Ruffalo and Ali's cameos are purely fan theories, but in the past, Kevin Feige and the MCU have shocked fans with appearances they never expected.