The long-time voice of Kermit the Frog has squared off against executives at Disney over the company's decision to fire him after almost three decades of bringing that beloved Muppet to life.

The performer, Steve Whitmire, broke his silence in a telephone interview this week, saying that Disney's dismissal had amounted to "a betrayal" after a career devoted to carrying on the legacy of Jim Henson, the founder of the Muppets and the original voice of Kermit.

Whitmire insisted that Disney gave him no warning before telling him last fall that he would be replaced for what he described as minor reasons, like his manner of communicating with executives.

"This is my life's work," said Whitmire, 58, who lives in the Atlanta area. "The only thing I've done my whole adult life, and it's just been taken away from me. I just couldn't understand why we couldn't resolve this."

Disney, which acquired the Muppets in 2004 from the Jim Henson Co, painted a wholly different picture, portraying Whitmire as hostile to co-workers and overly difficult in contract negotiations. Members of the Henson family said they supported the dismissal as well.

Whitmire portrayed Kermit for 27 years in numerous films and television shows and took the puppet all over the world as the Muppets' pop culture significance expanded: a commencement ceremony, late-night comedy shows and even an episode of "WWE Raw". Now the actor's career is in ruins, while the Muppet brand will try to recover with Matt Vogel, a veteran Henson puppeteer, taking over the role.

In a 45-minute interview on Monday, a rarity without a piece of felt on his hand, Whitmire said that in October he received a phone call from two top Muppet Studio executives, both of whom he declined to name, telling him that he was being let go.

The executives gave two reasons for the decision, Whitmire recalled.

"They were uncomfortable with the way I had handled giving notes to one of the top creative executives on the series," Whitmire said, referring to The Muppets, the most recent television revival of the franchise, which aired on ABC for one season, ending in March 2016.

"Nobody was yelling and screaming or using inappropriate language or typing in capitals," he said. "It was strictly that I was sending detailed notes. I don't feel that I was, in any way, disrespectful by doing that."

The second reason, he said, had to do with a small video shoot involving Kermit, Fozzie Bear, Miss Piggy and an outside company, which Whitmire declined to name, that took place more than a year before the phone call.

There was a contract dispute between the Screen Actors Guild, of which Whitmire is a member, and Disney over how much the performers behind the puppets should be paid. Eventually, the union advised Whitmire not to do the project. Whitmire agreed.

Nobody was yelling and screaming or using inappropriate language or typing in capitals.

Steve Whitmire

After the phone call with the Muppet Studio executives, Whitmire said he had a lawyer approach Disney executives afterward to propose adding a provision to future contracts saying he would never give creative feedback again or talk to the union again while a deal was being negotiated.

Disney declined the offer, Whitmire said, and he soon found himself separated from his life's work.

"I've been laying awake at night for nine months trying to empathise with a position of ending somebody's career over issues that seem to me to be so easily solved," Whitmire said.

'Unacceptable business conduct'

Disney executives declined to discuss Whitmire's characterisation of the phone call but did offer their fullest explanation of why Whitmire was being replaced, charging that his issues went far beyond minor.

"The role of Kermit the Frog is an iconic one that is beloved by fans and we take our responsibility to protect the integrity of that character very seriously," said Debbie McClellan, head of the Muppets Studio, a division of Disney.

"We raised concerns about Steve's repeated unacceptable business conduct over a period of many years, and he consistently failed to address the feedback. The decision to part ways was a difficult one which was made in consultation with the Henson family and has their full support."

'Brinkmanship'

Henson's family, which still runs the Jim Henson Co, chose Whitmire to replace Henson as Kermit in 1990 after Henson unexpectedly died of pneumonia at 53. Some of those same family members say they supported the decision to replace Whitmire, though they are no longer involved with the Muppets.

"He played brinkmanship very aggressively in contract negotiations," said Lisa Henson, president of Jim Henson Co, and Jim Henson's daughter, in a telephone interview.

Henson said Whitmire was adamantly opposed to having an understudy for his role, which presented problems when it came to what she called "B-level performances, such as a ribbon-cutting".

She said he was unwilling to appear on some of these occasions but also refused to develop an understudy and that he "blackballed young performers" by refusing to appear on the show with them.

'Attacking everyone'

Brian Henson, the company's chairman and Jim Henson's son, said that while Whitmire's Kermit was "sometimes excellent, and always pretty good," things changed when he was off set.

"He'd send emails and letters attacking everyone, attacking the writing and attacking the director," he said."

For Whitmire, who didn't respond to the criticisms levelled by the Hensons or Disney, this is the end of a professional journey that has occupied his entire adult life.

"Given the opportunity," Whitmire said, "I'd step right back in."

The New York Times