The original 1973 lineup of the heavy metal foursome was more of two twosomes, with Gene Simmons and Paul Stanley believing they took the band's success more seriously than hard-partying Ace Frehley and Peter Criss.
By 1978, Frehley and Criss both allegedly stated they wanted to quit the band, leading to a short break before giving it another go by producing four Kiss solo albums released that September. However, this did little to improve relations. Stanley recalled a tense onstage argument between him and Criss over the latter's cocaine-muddled drumming performance in his 2014 memoir "Face the Music: A Life Exposed." In 1980, Criss was booted from the band, with Frehley following in 1982 after a lackluster commitment to Kiss' next album.
In a 2019 interview, Simmons recalled: "Ace and Peter … were in and out of the band—fired—three times. For drugs, alcohol, bad behavior, being unprofessional … they weren't carrying their load. You can't be in a car with two flat tires. It's not going to go anywhere."
The tensions between the original members persisted for decades, but in the final years, signs of reconciliation emerged. Simmons spoke more graciously about his former bandmates in 2025. In a February 2025 episode of "The Magnificent Others with Billy Corgan," Simmons praised Frehley and Criss as being integral to Kiss' success. He said the same in April 2025, when he appeared on Rick Rubin's "Tetragrammaton" podcast. "I'm still sad about Ace and Peter, who even today can't enjoy the fruits of their labor," he shared. "They were equally as important as Paul and myself in the formation of the band and those first few years—there's no question about it. It was a four-wheel-drive vehicle."
Frehley, meanwhile, has spoken favorably of Simmons and Stanley, referring to them as "just like brothers" in a March 2024 interview. In September 2025, Frehley told Guitar World he was open to reconciliation and that he was over Paul Stanley's negative comments from years past. "Jealousy can make you say some stupid things," he said, dismissing his former bandmate's words.
Tragically, any hopes for a full reunion ended when Frehley died on Oct. 16, 2025, at age 74 from injuries sustained in a fall at his home. His family said in a statement: "We are completely devastated and heartbroken. The magnitude of his passing is of epic proportions, and beyond comprehension."
In a final act of reconciliation, Simmons, Stanley and Criss all attended Frehley's funeral, reuniting to lay their former bandmate to rest. Simmons and Stanley released a joint statement saying they were "devastated" by Frehley's passing. "He was an essential and irreplaceable solider during some of the most formative foundational chapters of the band and its history," the two said. "He is and will always be a part of KISS' legacy."