Sean “Diddy” Combs’ ex-assistant Capricorn Clark — who once reportedly dubbed him “the devil’’ — could spill the tea on the stand Tuesday about the jealousy that sparked his break-in of rapper Kid Cudi’s home.

Clark’s testimony is set to kick off the resumption of the hip-hop mogul’s Manhattan sex-trafficking trial.

Cudi, whose full name is Scott Mescudi, testified last week that Clark called him in December 2011 to warn him that Combs had forcibly entered his Hollywood Hills home after learning Mescudi had been dating Combs’ on-and-off girlfriend, Cassie Ventura.

The “Mr. Rager” singer told jurors he had been with Ventura at the Sunset Marquis hotel when they received a phone call from Clark, who he said sounded “very scared” and “on the verge of tears.”

Clark said Combs and his security staff had “forced” her to come with them for the break-in, Mescudi testified in federal court.

Prosecutors revealed at the start of the blockbuster trial that jurors would hear about Combs allegedly waking up an employee in the middle of the night and forcing her at gunpoint to take him and his bodyguard to the home of a man who Ventura had been dating.

Clark could also testify about receiving a shocking Dec. 23, 2011, email from Ventura, who wrote that a jealous Combs was threatening to release sex tapes of her and planning to have “someone hurt me and Scott Mescudi physically.”

Ventura testified about sending the email, which prosecutors have shown in court, to Clark and to her mother, Regina Ventura, who told jurors that she became “physically sick” after reading the message.

In 2023, after Diddy was hit with one of several lawsuits alleging sex assault, Clark wrote on her private Twitter account, “Last 11 years of my life, I have had to deal with EVERYONES nonsensical allegiance to the devil,” apparently referring to the rapper, according to HotNewHipHop.

Clark will become Combs’ third former assistant to testify as a government witness at the trial where the Bad Boy Records founder is accused of leading a “criminal enterprise” and forcing his romantic partners into “freak-offs” — or rug-fueled sex marathons with prostitutes.

Another former assistant, David James, testified that the paranoid rap super-producer once forced Clark to take a lie detector test after she was robbed — “to prove that she wasn’t part of the heist.”

Jurors will also hear from witnesses at the Los Angeles police and fire departments before the end of the day Tuesday, prosecutors said last week.

Combs, 55, has pleaded not guilty to charges of racketeering conspiracy, sex trafficking by force or coercion and transportation to engage in prostitution. He’s being held without bail at Brooklyn’s Metropolitan Detention Center.

If convicted on all counts, he could be sent to prison for life.

Judge Arun Subramanian said he hopes that the trial will be wrapped up by the Fourth of July, while prosecutors say they’re planning on taking around four more weeks to present their case against Combs.