Brian “Kato” Kaelin is not impressed with FX’s “The People v. O.J. Simpson” or the way Season 1 of “American Crime Story” is portraying him … or, specifically, his hair.

On Wednesday, Simpson's onetime house guest — who gained sudden fame by becoming a key witness during the 1994-95 murder trial — shared his thoughts on the true-crime series in a piece for the New York Daily News. According to the 56-year-old “Sports Haters” host, he has an issue with the “fabricated” storyline of the FX anthology, in addition to the “ugly” wig that actor Billy Magnussen wears while portraying him in the series.

Kaelin explained that “The People v. O.J. Simpson” makes him out to be a key player in the made-for-TV story when he personally felt that he wasn’t. He theorized that FX must be aiming for “comedic relief” by slipping him into the gripping plotline or attempting to get “the most bang out of their buck for that god-awful wig.”

“There’s too much Kato Kaelin in this series — even for Kato Kaelin’s taste,” he wrote in third person. “And I'm not talking about long scenes with Billy Magnussen, who plays me in the show. I'm talking scenes where that ridiculous blonde wig is rearing its ugly head, which were completely fabricated. ”

One reportedly fictitious storyline Kaelin cites takes place in episode 2, titled “The Run of His Life,” when Robert Kardashian Sr. (David Schwimmer) breaks the news to Simpson’s family and friends (including Kato) that he has reason to believe the Juice had killed himself.

“I was never there. Did that actually happen? I don't know. I just know I wasn't there,” he responds.

Slate also unveiled another faux Kato-centric moment from “The People v. O.J. Simpson.” According to the outlet, Kaelin wasn’t the person responsible for telling authorities that Simpson was in Chicago the night Nicole Brown Simpson and Ronald Goldman were murdered (an event that occurred in the series premiere). That false alibi was reportedly given by Simpson’s secretary Cathy Randa. She was not included in episode 1.

Brian "Kato" Kaelin "The People v. O.J. Simpson Brian "Kato" Kaelin pictured testifying in the O.J. Simpson double murder trial on March 22, 1995, in Los Angeles. Photo: Getty Images

Kaelin claims he’s not being “nitpicky,” which he thinks would be complaining that the FX series failed to “get the right shade of blonde” for Magnussen's wig. However, he is worried the series has failed to accurately portray documented facts about the case.

“How do we know the tone or intention is the way it's portrayed? We don't. I just know a lot of what I've seen so far involving ME — never happened,” he wrote.

Kaelin also took to Twitter to further state his concerns over the great hair-troversy. While replying to a concerned fan, he revealed that only the network could answer why his golden locks weren’t given the justice they deserved in “The People v. O.J. Simpson.”

“The People v. O.J. Simpson: American Crime Story” airs Tuesday nights at 10 p.m. EST on FX.