The father of Dave Brockie, the late frontman of the eccentric heavy metal band GWAR, has sued his son's band mates, claiming they have stolen his son’s ashes, guitars and artwork. Brockie, who was known onstage as the armor-clad demon Oderus Urungus, was found slumped in a chair at his Richmond, Virginia, home March 23, 2014. A medical examiner later determined that the 50-year-old musician died of accidental drug overdose. Scroll down for video . Legal battle: The father of Dave Brockie (pictured left and right on stage), the late frontman of the eccentric heavy metal band GWAR, has sued the group claiming they have stolen his son’s ashes, guitars and artwork . Under fire: The lawsuit alleges that the surviving members of GWAR swiped Brockie's guitars, artwork, a gold record, tour souvenirs and even his ashes . The Grammy-nominated band was founded in 1984 and is known for its comically grotesque costumes, stage antics and vulgar lyrics. Brockie was the mastermind of the fantasy-inspired band and its founding member. A lawsuit filed last Thursday by William Brockie, Dave's father and the administrator of his estate, seeks $1million in compensatory damages on top of unspecified punitive damages for alleged breach of contract. Mr Brockie details in the lawsuit, cited by the Courthouse News Service, how in the months following his son's death, his bandmates allegedly swiped his guitars, artwork, a gold record, tour souvenirs and even his ashes. According to court documents, the surviving members of GWAR hauled the loot to the headquarters of their management company, Slave Pit Inc, and locked it in an office. When William Brockie arrived demanding to have his son's cremains back, the lawsuit alleges that his son's friends forced him to wait outside and then brought him only a small portion of Dave's ashes in a used plastic bag with Discover credit card logo on it. Morbid: William Brockie claims that when he demanded to have his son's ashes back, GWAR members refused to let him inside their offices and  then brought him only a small portion of Dave's ashes in a used plastic bag . The suit accuses the heavy metal band of using Dave Brockie's image without consent on GWAR merchandise and and trying to take over his estate . Defendant: The lawsuit names drummer Brad Roberts, better known by his stage name Jizmak Da Gusha (second right), as the leader of the alleged conspiracy . The lawsuit names drummer Brad Roberts, better known by his stage name, Jizmak Da Gusha, as the leader of the alleged plot to capitalize on Dave Brockie's death by using his name and likeness on T-shirts and other merchandise without authorization. William Brockie also claims in his suit that his son was never paid for taking part in the band's 2014 Far East tour across Asia and Australia . Immediately following Brockie’s passing, the lawsuit contends, GWAR went to work trying to take over his estate and started a charity in his name without his father's consent. Dave Brockie remained a constant in GWAR over the course of its 30-year-history, though it has had a revolving door of members. In 2011, 34-year-old lead guitarist Cory Smoot was found dead on the band's tour bus. Accidental overdose: Richmond, Virginia medical examiners ruled last June that Dave Brockie's cause of death was acute heroin intoxication . The 50-year-old, who went by Oderus Urungus onstage, was found dead in a chair in his Richmond home on March 23, 2014 . GWAR, who described themselves as 'Scumdogs of the Universe', released their 13th album last year and recently toured Australia and Japan. Brockie always appeared on stage as an intergalactic humanoid barbarian with devil horns and a meaty-looking face, carrying a long sword called an 'Unt Lick'. The heavy metal band gained international fame for their outrageous stage show and wild personas, with GWAR members creating their own gory costumes. Their video clips were also a staple of TV show 'Beavis and Butt-Head'. Rawwwr: The Grammy-nominated band GWAR was founded in 1984 and is known for its comically grotesque costumes, stage antics and vulgar lyrics . Top dog: The Richmond, Virginia-based band had a constant revolving cast of demonic characters, but founder and mastermind Brockie was a staple . 'Anyone who has seen GWAR knows it’s an adult comedy rock musical,' Brockie told CBS 6 reporter Mark Holmberg in 2011. Style Weekly reported Brockie was a devoted fan of the Washington Redskins and a World War II buff, who had recently fulfilled his lifelong dreams of visiting Stalingrad and playing shows in Japan.
Dave Brockie, 50, was found dead on March 23, 2014, at his Richmond, Virginia home.
Medical examiner ruled Brockie died of accidental acute heroin toxicity.
His father, William Brockie filed lawsuit against band seeking $1million in compensatory damages on top of unspecified punitive damages.
Suit alleges bandmates stole his remains, guitars, artwork and a gold record.
When Mr Brockie demanded to have his son's ashes back, GWAR members allegedly gave him a small portion in a used plastic bag.