Frank Mullen

In July 2019, Mullen married Natalie Henriquez. During their wedding, he sang "Entrails of You", a "love song" from Suffocation's 2006 self-titled album. Mullen shared a video of the performance on his Facebook fan page and garnered more than 120,000 views.

Mullen retired from his musical career after a final tour with Suffocation, dubbed the Farewell Frank Tour. He made his final U.S. appearance as the lead vocalist for the band in their performance at Nightclub Reverb in Reading, Pennsylvania on November 17, 2018. Mullen's performance featured plenty of his signature stage move, the death chop, from which the tour gets its tagline, Death Chopping North America. He was succeeded as lead vocalist for Suffocation by Rick Myers, who on several occasions had filled-in for him. Mullen later reprised his role for the band's Japanese tour in 2019 before again relinquishing the position to Myers.

After the release of the 2013 album Pinnacle of Bedlam, Mullen announced that he will retire from full-time touring from the band. Pinnacle of Bedlam saw the return of drummer Culross to the band since his previous appearance on Despise the Sun. Mullen and Hobbs became the only remaining original members of the band after the departure of Smith in 2012, and were joined on the band's 2017 album, ...Of the Dark Light, with guitarist Charlie Errigo, bassist Derek Boyer and drummer Eric Morotti.

In 2009, Mullen was the vocalist on Blood Oath which the band released with the record label Nuclear Blast. His brutal guttural growls were particularly noted on the song "Come Hell or High Priest". Pitchfork said of Mullen's vocals, while "he spews tales of madness, megalomania, and paranoia", his "growls are surprisingly understandable".

Suffocation subsequently broke up and did not reunite until 2002; that year Relapse Records re-released Despise the Sun. The newly re-established band included Mullen, Hobbs, Smith and Barohn, with new band member Guy Marchais, previously with the bands Pyrexia and Internal Bleeding. In April 2004, the band released Souls to Deny before switching bassists to Derek Boyer from the band Decrepit Birth. They entered a period of heavy touring before releasing the self-titled album Suffocation in September 2006.

The band released their second full album Breeding the Spawn in 1993. The album was criticized for "its short length", "its perceived repetition of the predecessor's overall formula" and a "muddy final mix". The band has since re-recorded many of the songs from the album on subsequent albums. In 1995, they released Pierced From Within, "one of Suffocation's strongest albums", according to Rolling Stone. The band recorded an EP, Despise the Sun, in 1998 and released it through their band management company Vulture but it was not in wide circulation. Despise the Sun featured a different drummer, Dave Culross, who would later again replace Smith in 2012.

Suffocation released a six-song EP Human Waste in 1991. The EP was one of the first records released by Relapse Records. Their first feature-length album Effigy of the Forgotten was released the same year by Roadrunner Records. The album featured Mullen's distinct low-pitched guttural vocals. According to the Long Island Music Hall of Fame, which the band was inducted into in 2012, "Suffocation created a blueprint for death metal with its guttural vocals, downtuned guitar sounds, and fast and complex guitar riffs and drumming."

In 1989, Mullen, Hobbs (guitarist), and Smith (drummer) formed the metal band Suffocation with bassist Josh Barohn and guitarist Doug Cerrito.

Francis Eugene Mullen (born January 2, 1970) is the former vocalist of the American technical death metal band Suffocation. He is one of the first vocalists to introduce low-pitched guttural vocals into the death metal genre. Mullen performed and recorded with the band from 1989 to 2018.

Mullen was born on January 2, 1970, and grew up in Long Island, New York. He became a fan of metal music from a young age and was initially attracted to albums like Slayer’s Hell Awaits and Exodus's Bonded by Blood because their album cover art. Mullen met band mates Terrance Hobbs and Mike Smith in high school and they formed a metal cover band called Wombrot in which he initially played bass.