Lilker was the bassist for the thrash metal band Nuclear Assault and was a founding member of Anthrax with Scott Ian. Lilker was then playing rhythm guitar and recorded bass guitar and co-wrote on their first album, Fistful of Metal (1984). Not long after the release of that album, he was dismissed from Anthrax and replaced on bass by one of the band's roadies Frank Bello. Despite this, Lilker has remained close to the band, receiving a co-writing credit for at least one song on their next two albums, Spreading the Disease (1985) and Among the Living (1987), and he was offered to fill in for Bello on their spring 2024 tour dates.[2][3]
In addition to Anthrax and Nuclear Assault, Lilker has played bass in grindcore band Brutal Truth and crossover band Stormtroopers of Death with Scott Ian and Charlie Benante (from Anthrax), and Billy Milano (Anthrax roadie, M.O.D. singer). He has also played bass with Exit-13, Malformed Earthborn,[4] The Ravenous, Overlord Exterminator,[5]Venomous Concept, Crucifist,[6] Nokturnal Hellstorm,[7] Nunfuckritual[8] and Extra Hot Sauce.[9]
During his tenure with Anthrax, Lilker played bass by fingerpicking, but since forming Nuclear Assault, he has mostly been using a pick.
Lilker played on Holy Moses' 1994 No Matter What's the Cause.[10] He is known for his fast, guitar-like riffing through heavy distortion. Lilker has been a columnist with Zero Tolerance Magazine since the publication's inception in 2005. In 2009, it was reported that Chicago journalist Dave Hofer was writing a biography of Lilker.[11]
Lilker formed United Forces with Stormtroopers of Death bandmate Billy Milano as their singer in 2012.[12]
In January 2014, Lilker announced his plans to retire from being a full-time recording and touring musician.[13] He also announced that Brutal Truth would break up on his 50th birthday.[14] However, Lilker remained a member of Nuclear Assault, who released new material in 2015 for the EP Pounder, and had continued performing live sporadically until their breakup in 2022.[15][16][17][18]