John Sekula was the original guitarist for alternative metal

Alternative metal

Alternative metal is a genre of alternative rock and heavy metal that gained popularity in the early 1990s. Most notably, alternative metal bands are characterized by heavy guitar riffs and experimental approaches to heavy music.-Origins:...

 band Mushroomhead

Mushroomhead

Mushroomhead is an American industrial metal band from Cleveland, Ohio. Formed in 1993 in Cleveland Warehouse District, the band's music can be described as a synthesis of alternative music, heavy metal, and electro-industrial...

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Biography

Also known as J.J. Righteous, Sekula was mostly identified as wearing a troll-like monster mask. He was replaced by Marko "Bronson" Vukcevic, son of Milan Vukcevic in the late 1990s.
Sekula also played guitar for State of Conviction

State of conviction

State of Conviction formed in 1996 and is a hardcore band with a funk background. The band was spawned from the Unified Culture song "Convictions"....

, who are fronted by former Mushroomhead vocalist Jason Popson

Jason Popson

Jason Popson is best known for his eleven years as a singer in the band Mushroomhead, during which time he was known by the stage name J-Mann...

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Death

John Sekula died on October 28, 2010, aged 41. The cause of his death was said to be heart failure.

Mushroomhead

• Mushroomhead
  Mushroomhead (album)
  Mushroomhead is the first album from industrial metal band Mushroomhead. Released independently in Cleveland, Ohio in 1995. Some songs have been remastered on XX. Many of the songs contain samples from movies. The album was repressed in 2002 along with Superbuick and M3 with alternate artwork,...
  
  - 1995
• Superbuick
  Superbuick
  Superbuick is the second independently released album from industrial metal band Mushroomhead. The album was released in 1996. Most of the songs were later remastered on XX which was initially released by Eclipse Records, then through Universal Records after some slight modifications and two...
  
  - 1996
• Remix - 1997
• M3
  M3 (album)
  M3 is the third album released by the industrial metal band Mushroomhead. It was released in 1999 on their own label. The songs Before I Die, Solitaire/Unraveling, Xeroxed and Born of Desire were later included on both the Eclipse Records and Universal Records versions of XX in 2001.-Track...
  
  - 1999
• Remix 2000
  Remix 2000
  Remix 2000 was the re-release of the Multimedia Remix album by Mushroomhead from 1997, featuring a few new tracks and without the videos from the original release...
  
  - 2000
• XX
  XX (album)
  XX is the fourth major label album by industrial metal band Mushroomhead, released in 2001. Originally released through Eclipse Records, where Mushroomhead took classic tracks and re-recorded them. XX was entirely re-recorded and re-released on Universal Records later in the year...
  
  - 2001