Hillel Slovak (Hebrew: הלל סלובק; April 13, 1962 – June 25, 1988) was an Israeli-American musician, best known as an early guitarist of the Los Angeles rock band the Red Hot Chili Peppers, with whom he recorded two albums. His guitar work was rooted in funk and hard rock, and he often experimented with other genres, including reggae and speed metal. He is considered to have been a major influence on the Red Hot Chili Peppers' early sound.
Born in Israel, he later moved to the United States. Slovak met future bandmates Anthony Kiedis, Flea, and Jack Irons while attending Fairfax High School in Los Angeles. There, he formed the group What Is This with Irons, Alain Johannes, and Todd Strassman; Flea later replaced Strassman.
Flea, Kiedis, and Irons founded the Red Hot Chili Peppers in 1983 and Slovak joined shortly thereafter. The band quickly began gaining popularity in Los Angeles through their energetic stage presence and spirited performances. Slovak eventually quit to focus on What is This, which had been signed to a record deal, leaving the Red Hot Chili Peppers to record their 1984 debut album without him, including five songs he co-wrote. Slovak rejoined the Chili Peppers in 1985 and recorded the albums Freaky Styley (1985) and The Uplift Mofo Party Plan (1987) with them.
During his career, Slovak developed a serious heroin addiction. He attempted to rehabilitate several times but died of an overdose on June 25, 1988, at age 26. Several Red Hot Chili Peppers songs have been written as tributes to Slovak, including "Knock Me Down", "Otherside", "My Lovely Man", and "Feasting on the Flowers". In 1999, his brother James published a book, Behind the Sun: The Diary and Art of Hillel Slovak, which features Slovak's diaries and paintings. Slovak was posthumously inducted into the Rock and Roll Hall of Fame as a member of the Red Hot Chili Peppers on April 14, 2012, with his brother James accepting the award on his behalf. A documentary on Slovak's life that was co-produced by Slovak's brother titled The Rise of the Red Hot Chili Peppers: Our Brother, Hillel, debuted on Netflix on March 20, 2026.
1962–1980: Early life and Anthym
Hillel Slovak was born in Haifa, Israel, to Jewish parents who were survivors of the Holocaust. His mother was originally from Poland while his father grew up in Yugoslavia. The family immigrated to the United States when Slovak was four years old. They initially settled in the Queens borough of New York City before relocating to the Fairfax neighborhood of Los Angeles two years later. As a child, Slovak developed an interest in art, and often spent time painting with his mother, Esther. He attended Laurel Elementary School in West Hollywood and Bancroft Jr. High School in Hollywood, where he met future bandmates Jack Irons and Michael "Flea" Balzary. Slovak received his first guitar at age 13 as a bar mitzvah present, and regularly played the instrument into the late hours of the night. During this time, he was highly influenced by hard rock music such as Jimi Hendrix, Led Zeppelin, and Kiss.
As a freshman at Fairfax High School, Slovak formed a band with Irons on drums and two other high school friends, Alain Johannes and Todd Strassman. They called their band Chain Reaction, then changed the name to Anthem after their first gig. After one of the group's shows, Slovak met audience member Anthony Kiedis, and invited him to his house for a snack. Kiedis later described the experience in his autobiography Scar Tissue: "Within a few minutes of hanging out with Hillel, I sensed that he was absolutely different from most of the people I'd spent time with ... He understood a lot about music, he was a great visual artist, and he had a sense of self and a calm about him that were just riveting." Slovak, Kiedis and Flea became best friends and often used LSD, heroin, cocaine and methamphetamine recreationally.
The original bassist for Anthem, which renamed to Anthym, was deemed unsatisfactory, so Slovak began teaching Flea to play bass. Following several months of commitment to the instrument, Flea developed proficiency and a strong musical chemistry with Slovak. When Strassman saw Flea playing Anthym songs on his equipment he quit the band, with Flea quickly replacing him. Shortly afterwards Anthym entered a local Battle of the Bands contest and won second place. Anthym started to play at local nightclubs, despite the fact that the members were all underage. After graduating from high school, the band changed their name to What Is This. Around the same time, Flea left the band to accept an offer to play bass in the prominent L.A. punk band Fear. What Is This continued on and performed many shows along the California coast.
1980–1982: Red Hot Chili Peppers formation
Slovak, Kiedis, and Flea began to create their own music after finding inspiration in a punk-funk fusion band called Defunkt. The three formed a band with What Is This drummer Jack Irons called Tony Flow and the Miraculously Majestic Masters of Mayhem. The band had only one song, entitled "Out in L.A.", and was formed for the purpose of playing the song once. The song was based on a guitar riff that Slovak wrote while "jamming" with Irons, and was not meant to become a real song until Kiedis decided to rap over the music. Following the group's first show at The Rhythm Lounge, the owner of the bar asked them to return, but with two songs instead of one. After several more shows, and the addition of several songs to their repertoire, the band's name was changed to Red Hot Chili Peppers.
After the band started to gain popularity amongst the L.A. club scene, Kiedis began writing more lyrics. The lyrics would eventually become songs such as "Green Heaven" and "True Men Don't Kill Coyotes", and the band's concert repertoire quickly grew to nine songs as a result of months of playing local nightclubs and bars. Over the course of the next six months, the Red Hot Chili Peppers played many shows in L.A. clubs and became something of an underground hit. Slovak, Kiedis, and Flea moved into a small house in a high-crime area in Hollywood where they collaborated musically and continued their drug addictions. The threesome traveled to New York City to perform more shows and to "spread Chili Pepperdom". Shortly after the trip, Slovak moved out of the group's shared house to live with his girlfriend.
1982–1988: What is This? stint, Freaky Styley, and The Uplift Mofo Party Plan
The Red Hot Chili Peppers entered Bijou Studios to record a demo tape and subsequently secured a record deal with EMI. Flea left Fear to pursue the Red Hot Chili Peppers. At the same time, What Is This had also gotten a record deal. Since Slovak and Irons considered the Chili Peppers to be merely a side project and not a serious commitment, they left the Peppers to concentrate on What Is This?. Flea ultimately respected the decision, but felt the band would suffer musically without him and Irons. He and Kiedis hired drummer Cliff Martinez and guitarist Jack Sherman to fill Irons' and Slovak's places, respectively. During the recording of the second What Is This album, Slovak became frustrated with the band and contacted Flea about rejoining the Red Hot Chili Peppers. This came at an opportune time, as the group was dissatisfied with Slovak's replacement, Jack Sherman. Kiedis felt that Sherman's guitar work "didn't have the same spirit" that Slovak contributed to the band's sound. When Flea asked Kiedis how he felt about Slovak rejoining the band, Kiedis responded by saying, "I'd give my firstborn son to get him back in the band." After the culmination of the promotional tour for their first album, Sherman was fired and Slovak rejoined the band.
Slovak returned to the Chili Peppers for their second album, Freaky Styley, which was released on August 16, 1985. What Is This had finally disbanded, and Irons returned to the Chili Peppers in mid 1986 after Martinez was fired. The relationship among Flea, Slovak and Kiedis began to deteriorate as a result of excessive heavy drug use and addiction. Flea recalled that "it began to seem ugly to me and not fun; our communication was not healthy". Kiedis became dependent on heroin, leaving the rest of the group to work on much of the album's material by themselves. The band lived in Detroit for a portion of the recording of the album, where Kiedis and Slovak indulged in heavy cocaine use. When Slovak was under the influence, he would often wear brightly colored clothing and dance in a "shuffling" fashion, which became the inspiration for the song "Skinny Sweaty Man" from the band's next album. After Kiedis completed a stint in rehab, he rejoined the Red Hot Chili Peppers in Los Angeles to record their third album The Uplift Mofo Party Plan. Slovak felt a deep connection to the album; he reflected in his diary "It was so fun. I'm so extremely proud of everybody's work—it is at times genius." Slovak was the subject of the songs "Skinny Sweaty Man", "Me and My Friends", & "No Chump Love Sucker". He was nicknamed "Slim Bob Billy", "Slim", or "Huckleberry", and throughout the albums Kiedis calls him by these nicknames before he starts a guitar solo. On The Uplift Mofo Party Plan, Slovak experimented with different musical styles, playing the sitar on the song "Behind the Sun".