DERANGED supporters of accused CEO assassin Luigi Mangione have flocked outside his federal hearing after the Department of Justice vowed to pursue the death penalty.

The protesters donned bizarre outfits and gushed over the 26-year-old Ivy League graduate before his latest bombshell court appearance.

Mangione is facing both state and federal charges for allegedly murdering UnitedHealthcare CEO Brian Thompson in New York City on December 4.

New York courts do not pursue the death penalty, but a federal jury could sentence him to death if he’s convicted of the higher stalking and murder charges.

Mangione pleaded not guilty when he was arraigned by state prosecutors, and he is expected to enter his federal plea on Friday.

Before his hearing, fans of the alleged assassin wore outfits based on the Nintendo character Luigi as they held up signs that called for his freedom and criticized the death penalty.

Meanwhile, dissenting artist Scott LoBaido showed up with a sculpture that appeared to call for Mangione’s conviction.

The artwork consisted of a model skeleton wearing a Luigi outfit and strapped to an electric chair. LoBaido said the title was “Deep fried Luigi.”

In a line waiting to enter the courtroom stood whistleblower Chelsea Manning, a transgender ex-United States Army soldier who was imprisoned for disclosing information to WikiLeaks.

Mangione walked into the courtroom alongside his defense team wearing a tan prison jumpsuit and was not handcuffed, according to the BBC.

The 26-year-old real estate scion became an overnight sensation after he allegedly murdered the dad of two as he was walking into an investors meeting in Manhattan.

Who is Luigi Mangione?

LUIGI Mangione, 26, was regarded as a beloved, clever and wealthy man by his family, friends and all who knew him.

He was born and raised in Maryland and graduated as the valedictorian from the private all-boys Gilman School in Baltimore.

He had no prior criminal history and was said to have been a model student, soccer player, and all-around athlete at high school.

One former student from the Gilman School told The U.S. Sun that Mangione was “popular” and had a “big circle of friends.”

“We went to the same school but didn’t really have the same friends. I’m really shocked by this whole thing,” the former student, who asked not to be identified, said.

“I think he played soccer, it was an all-boys school, so being a good athlete got you social currency for sure.”

Mangione graduated cum laude from the University of Pennsylvania, where he studied computer and information science, according to his LinkedIn profile.

He also got his masters from the Ivy League school.

Mangione was reportedly a data engineer at a car company in California before moving to Hawaii.

His cousin is also Republican Maryland State Delegate Nino Mangione.