Hugh Jackman, as the Wolverine, goes out fighting in ‘Logan’

Hugh Jackman as Logan-Wolverine in "Logan." : Ben Rothstein, Twentieth Century Fox

The Marvel Comics movie “Logan” has more in common with the “Mad Max” series than the “X-Men” franchise of which it is, only nominally, a part. Set in 2029 Texas, where Hugh Jackman’s titular mutant – once known as the mutton-chopped Wolverine, but now resembling a grizzled, fully bearded Max Rockatansky – is a booze-addled limo driver with aching joints, the new movie is somber, dark and more violent even than the similarly R-rated “Deadpool,” at least in tone.

Whereas that 2016 comic book movie cut its mayhem with mordant humor, creating a strong yet fizzy cocktail, “Logan” delivers its bloodshed straight up. It’s a movie for those who, in the 17 years since the first “X-Men” film arrived, have grown up, and are ready for a stiff, un-watered-down drink.

This one’s something of an acquired taste: strong and apt to induce melancholy, with the complex flavors of a well-aged Scotch.

Into this world – one where mutants have become increasingly scarce and Logan shares nursing duty for the seizure-prone, nearly 100-year-old Professor Charles Xavier (Patrick Stewart) with the mutant Caliban (Stephen Merchant) – comes a little girl with strange powers (Dafne Keen). Laura, as she is called, is being hunted by a gang of cyborgs known as the Reavers, led by Donald Pierce (Boyd Holbrook).

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These bounty hunters and the man they take their marching orders from, Dr. Zander Rice (Richard E. Grant), are canonical characters in the Marvel universe. Yet director James Mangold – who wrote the screenplay with his collaborator on 2013’s “The Wolverine,” Scott Frank, and “Green Lantern” scribe Michael Green – here gives himself what he has called enough “elbow room” to free himself from the entanglements of prior “X-Men” lore.

“Logan,” in other words, is less like a sequel to a long-running saga than something sui generis. It has, simultaneously, the exhilarating feel of a departure and the finality of a full stop.

Part of that radical sensibility is, of course, the stark brutality of the tale. “Logan” opens with a muttered f-bomb, followed by a scene in which the title character awakens to find thugs stealing the hubcaps off his car, in which he has been sleeping. The bad guys are quickly dispatched, with a graphic ferocity not previously seen from this character.

Yet there is also a gruff sentimentality to Logan, manifested not only in the cranky tenderness with which he takes care of the ailing Charles, but also in his grudging decision to take Laura under his adamantium claws. It’s pretty clear from the trailer that she’s a child after his own heart, so to speak, and Laura quickly demonstrates that she can almost take care of herself. (Other than the fact that she doesn’t have a driver’s license and needs to get to safety in Canada as soon as possible.)

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The film makes explicit allusions to “Shane,” the classic Western about a loner who becomes a kind of surrogate father to a little boy. But one of the nicest things about “Logan” is the way it distances itself from earlier literature, as it were. Laura’s determination to hit the road, for instance, in search of a place called Eden, is based on an “X-Men” comic book that she carries around with her. (It isn’t a real one, but one created expressly for the film.)

In response, Logan says, dismissively, “Maybe a quarter of it happened. And not like this. In the real world, people die.”

Those words – ironic given that movies are no more real than comics – prove to be prophetic, in ways that shouldn’t surprise anyone who has been following Jackman and Stewart’s public declarations about their future participation in the “X-Men” saga. The climax of this long, grisly and surprisingly satisfying tale – part road movie and part story of bonding – places a mournful punctuation mark on the mythological tale that fans have been following for so long, while leaving open the possibility of a continuation.

It wouldn’t be “Logan 2,” exactly, but something more like “Logan, Jr.”

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Three stars. Rated R. Contains bloody violence, obscenity and brief nudity. 137 minutes.

Ratings Guide: Four stars masterpiece, three stars very good, two stars OK, one star poor, no stars waste of time.