Marvel fans have apparently been sharing their theories with Scarlett Johansson. Her character, Black Widow/Natasha Romanoff, died in “Avengers: Endgame,” but not every fan has accepted that.

Johansson visited “Late Night With Jimmy Fallon” and revealed that audience members have tried to convince her that Natasha is still alive, despite sacrificing herself on Vormir.

“There’s very few certain things, but definitely death’s pretty certain, right? Yeah, definitely, for sure,” Johansson says. “But, people definitely don’t believe it and have tried to convince me that my character did not actually die, but that maybe my character exists in an alternate universe, but no, I think death is the final thing.”

To be fair, that’s not necessarily true in the Marvel universe. After all, Black Widow died just a couple years ago in the comics, but she was quickly brought back as a clone with implanted memories. The Marvel Cinematic Universe movies have even had a few characters dodge death.

Heroes like Captain America/Steve Rogers (Chris Evans) and Winter Soldier/Bucky Barnes (Sebastian Stan) are believed dead very early on in their stories before they were revealed to be living. Coulson (Clark Gregg) died in “Avengers,” came back in “Marvel’s Agents of S.H.I.E.L.D.,” died again on the show and was brought back as a life model decoy. Loki (Tom Hiddleston) has died multiple times, but the events of “Avengers: Endgame” will get him a Disney+ limited series. Vision (Paul Bettany), who died in “Avengers: Infinity War,” will next be seen in Disney+’s “Wandavision,” though it isn’t exactly clear how his character will appear.

So it’s safe to say that death isn’t all that certain in the Marvel Cinematic Universe. Still, Johansson insists that the “Black Widow” solo movie will bring some “closure” to the double agent’s story, even though it takes place long before her death.

“Honestly, it brought a closure to me that I needed. Yeah, ’cause I was kind of wiped out in that last one, emotionally and literally,” she told Fallon.

The “Black Widow” movie is set to hit theaters on May 1, 2020.

Black Widow death Scarlett Johansson says Black Widow is really dead, despite fan theories that she might be alive. Photo: Marvel Studios