The internet sensation who sprang to fame as “Kai the Hatchet-Wielding Hitchhiker” has been found guilty of beating a New Jersey attorney to death.

Caleb “Kai” McGillivary, 30, was convicted Wednesday of first-degree murder for killing 73-year-old Joseph Galfy nearly six years ago at a Clark home, the Union County Prosecutor’s Office announced.

The prosecution said the battered lawyer was found dead wearing only his underwear and socks in bed after a sexual encounter gone wrong in May 2013.

The fatal beating occurred just three months after McGillivary became a viral sensation for his heroic efforts as “Kai the Hatchet-Wielding Hitchhiker.”

In a bizarre television interview, McGillivary described how he used a hatchet to save a Fresno, Calif., utility worker from assault.

“Smash! Smash! Smash!” McGillivary said pantomiming the attack. “It was f–king gnarly, man. It was like the biggest wave I’ve ever ridden.”

The original video of “Kai the Hatchet-Wielding Hitchhiker” was viewed  more than 7 million times on YouTube, winning the internet star scores of fans.

McGillivary was reportedly still transient when he met Galfy in New York City and went back to the lawyer’s Jersey home.

Prosecutors and the defense agreed on most aspects of the case but argued over the course of the four-week trial whether the incident was self-defense.

McGillivary’s lawyers claimed he was drugged and passed out at the residence, only to wake up to the lawyer pulling down his pants, according to NJ.com. He told authorities he hit Galfy then fled the home.

But the prosecution pointed to how McGillivary fled the state and cut his hair after the murder. It also alleged he provided inconsistent accounts to authorities after he was arrested days later in Philadelphia.

The jurors deliberated for two days before convicting McGillivary in the trial.

McGillivary, faces life in prison, is scheduled to be sentenced June 13.