Black Widow pretty much always manages to keep her cool, and a talking tree isn’t going to change that. Scarlett Johansson was asked about “Avengers: Infinity War” recently, and she teased that Natasha Romanov is basically prepared for anything at this point — even the Guardians of the Galaxy.

“Somebody said to me the other day, they were like ‘Is Black Widow ready for the Guardians of the Galaxy?’” Johansson recalled on MTV’s Happy Sad Confused podcast. “The last time aliens descended on New York I think my character was like, ‘Alright, I’ve seen it all. I’m good.’ So I don’t even think like a talking tree will faze her at this point.”

The actress, who has been playing Black Widow since 2010’s “Iron Man 2,” also tends to go with the flow when it comes to Marvel. She recalled that she used to have long meetings with Marvel Studios President Kevin Feige after receiving a script. Now, it’s a different story. “As long as it feels true to me, then this conversation with another character is fine, even if it’s a tree,” she said.

READ: How important are the Guardians of the Galaxy in “Avengers: Infinity War”?

She couldn’t spoil much about what will actually happen when the Guardians meet the Avengers, but she noted that “Avengers: Infinity War” makes the Marvel Cinematic Universe (MCU) feel bigger than ever. “But certainly, reading the script, the universe has expanded to a point where it just… it’s like incomprehensible at this point I’m just like, ‘Okay, this is all happening,’” Johansson said.

No matter how many new characters are introduced, fans can always expect one element to remain: the action scenes. The “Ghost in the Shell” star is expected to do some stunts in “Avengers: Infinity War,” but she revealed that she has been training recently for personal reasons.

“I actually started recently taking a self-defense class because I was giving an interview and the interviewer asked if I could beat him up in the interview,” Johansson said on “Late Night with Seth Meyers.” “It was such a weird interview, and I was like, ‘Right now?’ And he was like, ‘Yeah, could you beat me up?’ And I was like, ‘I want to but I don’t know if I can!’ And then on my walk home I was like, ‘I gotta do something about this.’”

“Avengers: Infinity War” is set to hit theaters May 4, 2018.