There’s at least one Don he really likes.

The man suspected of gunning down mafia kingpin Francesco “Franky Boy” Cali showed off a hand covered in scrawls related to President Trump and the conservative QAnon movement at his first court appearance on Monday.

Anthony Comello, 24, who even yawned during the highly anticipated appearance in a New Jersey courtroom, held up his left palm and revealed a large, bold “Q” written in blue ink in the center of his hand.

It was surrounded by the phrases “MAGA Forever,” “United We Stand” and “Patriots in Charge USA.”

“Patriots in Charge” appears to be a variant of the slogan “Patriots Are In Control,” which is associated with online followers of QAnon, who’s purported to be one or more high-level government insiders aware of a “deep state” conspiracy against Trump.

A book titled “QAnon: An Invitation to the Great Awakening,” which claims to have been written by 12 anonymous QAnon followers, is this week’s No. 7 best-seller on amazon.com, following its publication late last month.

Comello has been researching QAnon online and often wears one of Trump’s signature “Make America Great Again” hats, law-enforcement sources told The Post.

Comello appeared to have written on his palm with a ballpoint pen before being brought into the Ocean County Courthouse in Toms River with his hands cuffed and shackled to a leather belt around his waist.

He showed off the handiwork while seated in the jury box before the judge entered, smirking as he turned to face the reporters and government workers who packed the courtroom.

A court officer who noticed Comello holding his hand out asked why he was doing it.

“Why not? I’m handcuffed,” he answered.

A few minutes later, Comello agreed to waive extradition to New York City and said he understood his Miranda rights, repeatedly answering “Yes, sir,” to questions from Superior Court Judge Wendel Daniels.

Comello, a construction worker, is charged with fatally gunning down Cali, the head of the Gambino crime family, outside Cali’s Staten Island home on Wednesday night.

Investigators suspect the slaying was tied to Cali barring his niece from dating Comello, law-enforcement sources have said.

In a prepared statement, defense lawyer Robert Gottlieb said, “Because of serious threats, he has been placed in protective custody where he will remain while this case is pending.”

Additional reporting by Craig McCarthy