Just when you think Pixar’s petting-zoo cute new movie “Hoppers” is flagrantly ripping off James Cameron, the characters come clean.

“You guys, this is like ‘Avatar’!,” squeals 19-year-old Mabel (Piper Curda), the studio’s rare college-age heroine. 

Shoots back her nutty professor, Dr. Fairfax (Kathy Kajimy): “This is nothing like ‘Avatar!’”

Sorry, Doc, it definitely is. And that’s fine. Placing the smart sci-fi story atop an animated family film feels right for Pixar, which has long fused the technological, the fantastical and the natural into a warm signature blend. Also, come on, “Avatar” is “Dances With Wolves” via “E.T.”

What separates “Hoppers” from the pack of recent Pix flix, which have been wholesome as a church bake sale, is its comic irreverence. 

Director Daniel Chong’s original movie is terribly funny, and often in an unfamiliar, warped way for the cerebral and mushy studio. For example, I’ve never witnessed so many speaking characters be killed off in a Pixar movie — and laughed heartily at their offings to boot.

What’s the parallel to Pandora? Mabel, a budding environmental activist, has stumbled on a secret laboratory where her kooky teachers can beam their minds into realistic robot animals in order to study them. They call the devices “hoppers.”  

Bold and fiery Mabel — PETA, but palatable — sees an opportunity. 

The mayor of Beaverton, Jerry (Jon Hamm), plans to destroy her beloved local pond that’s teeming with wildlife to build an expressway. And the only thing stopping the egomaniacal pol — a more upbeat version of President Business from “The Lego Movie” — is the water’s critters, who have all mysteriously disappeared. 

So, Mabel avatars into beaver-bot, and sets off in search of the lost creatures to discover why they’ve left.

From there, the movie written by Jesse Andrews (“Luca”) toys with “Toy Story.” Here’s what mischief fuzzy mammals, birds, reptiles and insects get up to when humans aren’t snooping around. Dance aerobics, it turns out. 

Per the usual, “Hoppers” goes deep inside their intricate society. The beasts have a formal political system of antagonistic “Game of Thrones”-like royal houses. The most menacing are the Insect Queen (Meryl Streep — I’d call her a chameleon, but she’s playing a bug), a staunch monarch butterfly and her conniving caterpillar kid (Dave Franco). They’re scheming for power. 

Perfectly content with his station is Mabel’s new best furry friend King George (Bobby Moynihan), a gullible beaver who ascended to the throne unexpectedly. He happily enforces “pond rules,” such as, “When you gotta eat, eat.”   

That means predators have free rein to nosh on prey, and everybody’s cool with it. Because of bone-dry deliveries, like exhausted office drones, the four-legged cast members are hilarious as they go about their Animal Planet activities. 

No surprise — talking lizards, sharks, bears, geese and frogs are the real stars here. They far outshine Mabel, even when she dons beaver attire. Much like a 19-year-old in a job interview, she doesn’t leave much of an impression. 

Yes, the teen has a heartfelt motivation: The embattled pond was her late grandma’s favorite place. Mabel promised her that she’d protect it. 

But in personality she doesn’t rank as one of Pixar’s most engaging leads, perhaps because she’s past voting age. Mabel is nestled in a nebulous phase between teenage rebellion and adulthood that’s pretty blasé, even if a touch of tension comes from her hiding her Homo sapien identity from her new diminutive pals. When animated, kids make better adventurers, plain and simple.

“Hoppers” continues Pixar’s run of humble, charming originals (“Luca,” “Elio”) in between billion-dollar-grossing, idea-starved sequels (“Inside Out 2,” probably “Toy Story 5”). The Disney-owned studio’s days of irrepressible innovation and unmatched imagination are well behind it. No one’s awed by anything anymore. “Coco,” almost 10 years ago, was their last new property to wow on the scale of peak Pixar.

Look, the new movie is likable and has a brain, heart and ample laughs. That’s more than I can say for most family fare. “A Minecraft Movie” made me wanna hop right out of the theater.

4/5 stars

Bounding into cinemas just in time for spring, the latest Pixar animation is a pleasingly charming tale of man vs nature, with a bit of crazy robot tech thrown in.

The star of Hoppers is Mabel Tanaka (voiced by Piper Curda), a young animal-lover leading a one-girl protest over a freeway being built through the tranquil countryside near her hometown of Beaverton.

Because the freeway is the pet project of the town’s popular mayor, Jerry (Jon Hamm), who is vying for re-election, Mabel’s protests fall on deaf ears.

Everything changes when she stumbles upon top-secret research by her biology professor, Dr Sam Fairfax (Kathy Najimy), that allows for the human consciousness to be linked to robotic animals. This lets users get up close and personal with other species.