This image released by Warner Bros. Entertainment shows a scene from "Godzilla vs. Kong." (Warner Bros. Entertainment via AP)

LOS ANGELES — The original 1950s Godzilla movies stomped into theaters carrying a metaphor about nuclear destruction. Two years ago, “Godzilla: King of the Monsters” sounded alarms about climate change.

But don’t fret about finding a message amid the mayhem as the towering radioactive lizard clashes with that instantly-recognizable giant ape in “Godzilla vs. Kong,” debuting Wednesday.

“It’s about two big guys bashing each other around,” laughed actor Rebecca Hall, who plays a researcher studying King Kong. “There is a sense that the less that humans meddle with stuff, the better, is a general theme.

“But yeah, it’s mostly a big fight,” she said.

Director Adam Wingard’s clash of the titans caps Legendary Entertainment’s “Monsterverse” series, which includes 2014’s “Godzilla” and 2017’s “Kong: Skull Island.” While not all were winners with critics, they’ve grabbed plenty of cash at the box office — more than $1.4 billion worldwide.

All four films take their central creatures seriously — both within the stories and by pouring money into nuanced special effects — while often winking at audiences with self-aware references. The films have featured performances from top-caliber actors enjoying the silliness of it all: Bryan Cranston, Ken Watanabe, Tom Hiddleston, John C. Reilly, Sally Hawkins, Vera Farmiga.

In the newest entry, the returning Millie Bobby Brown and Kyle Chandler are joined by Hall, Alexander Skarsgard, Brian Tyree Henry and Eiza Gonzalez, among others. No matter the scene, the actors always knew who was filling the top spots on call sheets during production — Godzilla and King Kong.

“They’re divas, that’s what’s so difficult. You go on to set, they don’t look at you in the eye. It is in their contracts. Whatever. I found it really difficult to work with specifically Kong, just because he thought he ruled the roost,” cracked Brown. “You just want your close-up. And Zilla is like ‘rawr’ and you’re like, ‘Bro, calm down.'”

Wingard said he focused on keeping the humans “as close together as possible” with the monsters throughout his film, including an “E.T.”-evoking moment with deaf actor Kaylee Hottle.

But when the titular showdowns start, “it was really important to me to do what the original films did. Like if you look at all the Showa-era films, when the monster battles happened, it just stays with the monsters. … We wanted to make sure the monsters were able to do their thing and just get into it.”

That includes a fight on and underneath an aircraft carrier in the middle of the ocean, with Kong struggling and Godzilla moving smoothly and realistically through water. Later, shattering neon highlights an eye-popping clash among and through the skyscrapers of a heavily-stylized Hong Kong.

Skarsgard, whose character leads a human team following Kong to the film’s most fantastical location, said Wingard’s approach was to “really lean into the craziness of it. And his take on it was, well, if you’re going to go big, go really big. Go crazy, let’s have fun with it, we haven’t seen these titans go toe-to-toe in 50 years, 60 years. So let’s really enjoy this.”