Like George, the silverback gorilla his primatologist character befriends in the new movie “Rampage,” Dwayne Johnson just keeps getting bigger.

His family comedy “Jumanji: Welcome to the Jungle,” released in December, is still doing major box-office business, and the Super Bowl Sunday trailer for his summer action flick, “Skyscraper,” has earned high marks. But before that release, there’s “Rampage,” based on a popular video game.

The latest trailer features new footage of George as well as other creatures that swell to Godzilla-like proportions and wreak havoc. It also includes Johnson’s trademark sly, raised-eyebrow humor: “Of course, the wolf flies,” he deadpans of one monster.

Malin Akerman is introduced as one of the film’s villains, a corporate shark behind Project Rampage, “the next chapter in genetic selection.” Gigantic crocodiles — what could possibly go wrong? (An airplane getting chomped out of the sky, for one.)

“Let’s go save the world,” Johnson’s gorilla whisperer declares. It’s a safe bet that Johnson will succeed — and save the worldwide box office again when “Rampage” invades theaters on April 20.