Luigi Mangione had it all.

He was good-looking, rich and an Ivy League grad. But mental health experts believe the 26-year-old has a chip missing.

The rich kid was arrested last week at a Pennsylvania McDonald’s and is now charged with the cold-blooded assassination of United Healthcare CEO Brian Thompson on a Manhattan sidewalk.

If the allegations prove to be true, “there’s a level of grandiosity in his decision that his own opinions would merit his complete disregard for some of the most basic laws of our society. . . . and this sense of permission to take a man’s life into his own hands,” psychologist Dr. Chloe Carmichael told theNew York Post.

This undated photo provided by UnitedHealth Group shows UnitedHealthcare chief executive officer Brian Thompson.
This undated photo provided by UnitedHealth Group shows UnitedHealthcare chief executive officer Brian Thompson.Photo by UnitedHealth Group /AP

“For him to imagine himself as this ‘hero’ — it raises questions for me about a personality disorder that’s along the lines of narcissism.”

When cops swooped in at the Altoona Micky D’s, Mangione was armed with his loopy three-page manifesto slamming “parasitic” insurance companies.

In a nod to the faculty lounge, he also lambasted corporate greed, police sources told the Post.

120524-UnitedHealthcare-CEO-Killed
This still image from surveillance video obtained by the Associated Press shows the suspect, left, sought in the the killing of UnitedHealthcare CEO Brian Thompson, center, outside a Manhattan hotel where the health insurer was holding an investor conference, Wednesday, Dec. 4, 2024.THE ASSOCIATED PRESS

Another psychotherapist put Mangione in the same class as serial killer Ted Bundy and hippy cult king Charles Manson.

Dr. Alyson Cohen said all three exhibited symptoms of “antisocial personality disorder.”

Recommended video

“Antisocial personality disorder is when people lack the ability to have empathy and compassion for other humans. With a cold-blooded killer, the cold-bloodedness is literally a lack of emotional consideration,” Cohen said.

“I don’t think that someone who feels deeply on an emotional level would be okay with shooting someone in the head.”

WHAT SIGN ARE YOU? TED BUNDY. FBI
WHAT SIGN ARE YOU? TED BUNDY. FBI

But famed forensic psychiatrist Dr. Carole Lieberman believes the accused killer was simply depressed because of his chronic back pain.

“Clearly this is someone who was planning on going out and conquering the world. So does he have some grandiosity? Yes. But I do not think he was a sociopath,” Lieberman said, adding “he felt like time was running out for him to accomplish his dreams, which is why he chose to murder Brian Thompson.”

Meanwhile, new photos have emerged of Mangione’s luxe life in Hawaii. The images obtained by theNew York Postare a far cry from the raging accused killer in recent photos.

Luigi Mangione gets playful with two pals in Hawaii. TRACYMEOMEO/ INSTAGRAM
Luigi Mangione gets playful with two pals in Hawaii. TRACYMEOMEO/ INSTAGRAM

Instead, Mangione appears to be having a blast, and even canoodling with a couple of cuties.

The photos are from January to June 2022 at Surfbreak, near Waikiki.

“There was no simmering anger that was visible,” Josiah Ryan, a Surfbreak spokesperson, told the Post.

One friend wrote on Facebook: “[Mangione was] the only name whose FaceTime calls I would pick up. He was one of my absolute best, closest, most trusted friends.”

The scion of an uber-wealthy Baltimore industrialist, Mangione attended the private Gilman School for boys at a cost of $35,000 per year. Later a valedictorian, he was described as shy.

Luigi Mangione, back right, with pals on the beach in Hawaii. TRACYMEOMEO/ INSTAGRAM
Luigi Mangione, back right, with pals on the beach in Hawaii. TRACYMEOMEO/ INSTAGRAM

“I don’t remember him ever having a serious girlfriend. He was very shy with girls,” a former classmate who asked to be anonymous told the Post.

“He was well-liked by people. He wasn’t a big partier or anything like that. He loved hiking and doing things with people. He [helped start] a book club.”

Mangione is currently locked up without bail at State Correctional Institution in Huntington, Pa. He is fighting an extradition order to return him to New York.

He has pleaded not guilty to a litany of charges, including murder and illegal gun possession.

[email protected]

@HunterTOSun