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Marvel legend Stan Lee has a message for Thanos. In a new video posted to Twitter, the 95-year-old comic book writer and producer issued a warning to the crazy titan following the events of Avengers: Infinity War. If you haven't seen the film yet...come on. Also, don't read this because it contains spoilers. 

Lee is rightfully outraged that Thanos snapped his fingers and destroyed half the characters and the universe he helped create. "I go out of town for a few days and when I get back I find out that Thanos has destroyed everything," Lee said. "That’s the last time I take a discount vacation." 

Of course, watching Spider-Man, Star-Lord, T'Challa, and many more of the best Marvel characters disintegrate was also a blow to fans (but the start of a hilarious meme), who can now only wait and see how the Avengers will recover from such a loss. Lee offers fans hope, while telling Thanos he better watch out because in no time, the universe's greatest defenders will return. "Unfortunately it means a lot of new work for me. Don’t worry, before you know it I'll have our friend up and at ‘em," he said. "And if I were Thanos I would start getting out of town."

Of course, it's still unclear what will happen in Avengers 4 that could bring all our fallen heroes back. Chris Hemsworth warned the fourth film could even be more shocking than the last, which means the Avengers might not be in the clear anytime soon. "If you were shocked by [Infinity War], I think the second one is even more shocking, for other reasons entirely," Hemsworth said in an interview with Esquire. "That’s what kind of blew me away the first time I read both scripts, is how they managed to orchestrate so many different characters but give them each their own separate shot and moments, and have it be elevated and feel fresh and unique—not just like a messy, thrown-together assembly of these guys."

The title for Avengers 4 has yet to be announced. But in May a synopsis for the Marvel film was revealed: "Our beloved heroes will truly understand how fragile this reality is and the sacrifices that must be made to uphold it."

Avengers 4 is scheduled to hit theaters on May 3, 2019.