On 1 July 2006 Watts died of a drug overdose, aged 47, and the band continued with John McKeering (ex-The Onyas) joining.

[1] Late that year Morrow and Turton-Lane were replaced by Ross Knight (ex-Rancid Spam) on bass guitar and lead vocals.

[6] Cosmic Psychos signed to Survival Records and in December 1989 released, Go the Hack,[1] which was produced by John Bee (Dynamic Hepnotics, Eurogliders).

[1][9] Early in 1990 Jones left to join Enter the Vertex and Robbie "Rocket" Watts (ex-I Spit on Your Gravy, Quivering Quims) replaced him on guitar.

[15] Also that year United Kingdom band, The Prodigy, covered a version of L7's track, "Fuel My Fire", which itself was based on the Cosmic Psychos' tune, "Lost Cause".

[17] In 2006, Cosmic Psychos issued their first studio album for nine years, Off Ya Cruet, on Sydney's Timberyard Records with Gravina producing.

[18] While on a tour promoting the album, Cosmic Psychos were in Bendigo for a gig, the following morning on 1 July 2006 Robbie "Rocket" Watts died in a friend's kitchen from a heroin overdose.

In April 2011 Cosmic Psychos released a new studio album, Glorius Barsteds, which appeared on Missing Link Records in a 2× CD format.

[23] In 2012 the band was the subject of a proposed biographical documentary, Cosmic Psychos: Blokes You Can Trust, directed and produced by Matt Weston.

[27] Madison Thomas reviewed the third performance at The Tote for Tone Deaf, "[t]he band plays relentlessly, barely stopping to catch their breath but making enough time for Knight to pound down a never ending supply of Pure Blonde sitting atop his amp ... Muller's drums are viciously belted ... McKeering noodles away sludgily on 'Custom Credit' and battles on against foldback problems".

[28] Robert John "Rocket" Watts (22 January 1959 – 1 July 2006) joined Cosmic Psychos in early 1990 as a replacement on lead guitar for Peter "Dirty" Jones.

He attended Melbourne High School and learned guitar from Rex jr.[29] In the early 1980s he lived in Castlemaine with his partner Vivienne Ward, the couple had a daughter, Rani.

[29] By mid-1980s Watts had moved to St Kilda where he became a member of punk band, I Spit on Your Gravy, with Fred Negro on drums and lead vocals.

[1] Watts remained the band's sole lead guitarist until his death on 1 July 2006 of a drug overdose, following a show in Bendigo, Victoria to promote Off Ya Cruet!.

[31] Acts appearing included Cockfight Shootout, Hoss, Ian Rilen and the Love Addicts, Mach Pelican, The Meanies, The Onyas, The Specimens and The Strays.

[22] Known for their droning, fuzzed-out bass and wah-wah guitar with repetitive lyrics, the Cosmic Psychos have a simple sound that has remained relatively unchanged since they formed in 1982.

Their fans include Buzz Osborne from the Melvins, Donita Sparks from L7, Lindsay McDougall from Frenzal Rhomb and Kurt Cobain from Seattle band Nirvana.

Pearl Jam singer Eddie Vedder recognised the Cosmic Psychos at a 2009 Melbourne solo show as an early influence on him and his band.