Cellmate Of Luigi Mangione Says Accused CEO Assassin Is ‘Super Nice,’ Assigned To Clean Toilets In NYC Prison

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Alessio AtriaJune 21, 2025, 3:27 pmDaily Digest, News, News Feed >

Michael Daddea, a former prison mate of Luigi Mangione, discussed the alleged murderer’s daily life and his cleaning job in the Brooklyn Metropolitan Detention Center in Sunset Park.

According to a since-deleted video posted on X, when Daddea arrived at the prison almost two weeks ago, a guard told him he would be housed in the same unit as Mangione.

“I’m like, ‘Yeah, he’s being a wise ass’… I look out the cell, Luigi is standing there, and he’s like, ‘Hey, how’s it going?’ Like, super nice,” Daddea recounted in the video. “Introduced himself to me first thing. I’ve literally – I’ve been in the unit for 10 minutes.”

According to the New York City Police Department (NYPD), UnitedHealthcare CEO Brian Thompson was fatally shot by Mangione on December 4, 2024.

A masked gunman fired multiple shots from a handgun in front of the entrance to the New York Hilton Midtown on West 54th Street, where Thompson attended a conference with the company’s investors.

He was shot in the back and the calf. He had then been taken to Mount Sinai West Hospital, where he was pronounced dead.

On the evening of Dec. 9, prosecutors in New York City charged Mangione with Thompson’s murder, after which he began to acquire media attention.

In February, Daddea was hit with federal charges for allegedly 3D-printing over 25 untraceable “ghost guns.”

He only spent two nights in the prison’s 4G unit before he made $250,000 bail at his March 7 arraignment, the Brooklyn U.S. Attorney’s office reported.

However, he asserted that he, another inmate nicknamed “V,” and Mangione wasted no time becoming friends.

“I go up and I go to shake Luigi’s hand, I’m like, ‘Yo, it’s an honor to meet you,” Daddea mentioned in the video. “He turns around, and he goes to me, ‘You two are the first kids that came in here who knew who I was or even cared about it.'”

“I guess he must have seen another white kid, and he was like, ‘Finally,'” he then suspected.

The prison mate also said that Mangione is a “collie,” which is a term used to allude to inmates with prison jobs.

“So, a collie could be like a unit boss that tells you what cell you’re going to,” he explained. “Luigi just happened to be a collie that cleans the showers.”

He also said that other “collie” jobs include preparing meals and cleaning food trays.

Daddea noted that when the alleged shooter is not scrubbing the toilets or running “laps around the unit,” he looks through local news for his name.

“Luigi gets the New York newspaper every day. . . he would have me help look through some to see if there are articles about him,” the fellow inmate wrote in the video’s comment section.

He said that he and Mangione, both Catholics, “did Ash Wednesday” when a priest came in and put the charcoal crosses on their foreheads on March 5.

Maddea also mentioned that they ate every meal together.

“So we sat together,” he stated. “Luigi would grab his sh– and come sit with us every day. We would just eat, bullsh–.”

In an electronic communication sent from jail on June 3, Mangione listed the things for which he was grateful.

In particular, he thanked Daddea for tolerating “the clutter of all my papers, sharing his unique wisdom, and doesn’t hesitate to humble me when I need it.”