2011: Cave-In-Rock, IL
ICP
Twiztid
Dark Lotus
Blaze
ABK
Boondox
The Dayton Family
CKY
Dj Quik
Kottonmouth Kings
Juvenile
Mystikal
George Clinton & Parliament Funkadelic
MC Hammer
Tech N9ne
E-40
Paris
Saliva
Xzibit
Ice Cube
Busta Rhymes
Vanilla Ice
Lil Jon
Mastamind
Potluck
Charlie Sheen- host
Dustin Diamond- host
Flavor Flav- host
Jumpsteady- host
2010: Cave-In-Rock, IL
ICP
Twiztid
Dark Lotus
Psychopathic Rydas
Claas
V Sinizter
Menace 2 Sobriety
Awesome Dre
Naughty By Nature
The Dayton Family
Warren G
Boondox
Kottonmouth Kings
AMB
Brotha Lynch Hung
Blaze
Tech N9ne
Rehab
ABK
Method Man & Redman
2009: Cave-In-Rock, IL
ICP
Twiztid
Dark Lotus
Property 6
View of a Burning City
Paradime
Bizarre
MC Chris
Esham
Ice Cube
Prozak
The Dayton Family
Boondox
Tech N9ne
Haystak
Coolio
AMB
Blaze
Kottonmouth Kings
Mushroomhead
ABK
Vanilla Ice
Scarface
2008: Cave-In-Rock, IL
ICP
Twiztid
Dark Lotus
Underworld Assassins
Drainage X
V Sinizter
Dirty White Boyz
Awesome Dre
Motown Rage
AMB
King Gordy
Afroman
ABK
Andrew WK
Primer 55
2 Live Crew
Blaze
Ice T
Zug Izland
Esham
Boondox
Three 6 Mafia
2007: Cave-In-Rock, IL
ICP
Twiztid
Dark Lotus
Menace II Sobriety
Bat on Fire
Edifide
Psycho Jesus
Mastamindz
King Gordy
Zug Izland
Prozak
Blaze
Bone Thugs N Harmony
Motown Rage
ABK
Mushroomhead
Haystak
Boondox
Necro
Ying Yang Twins
2006: Pataskala, OH
ICP
Twiztid
Dark Lotus
Filthee Immigrants
Wolfpac
Too $hort
Project Deadman
Rehab
Tommy Lee
AMB
Jumpsteady
Digital Underground
Drowning Pool
2005: Garrettsville, OH
ICP
Twiztid
Dark Lotus
Underground Psychos
Mini Kiss
Jumpsteady
Manntis
Esham
ABK
2 Live Crew
Blaze
Powerman 5000
Ronin
Tech N9ne
Mack 10
Axe Murder Boyz (Underground Psycho winners)
2004: Garrettsville, OH
ICP
Twiztid
Dark Lotus
Wolfpac
Jumpsteady
ABK
Dj Swamp
Zug Izland
Blaze
Esham
Kurupt
Tech N9ne
Vanilla Ice
ODB
2003: Garrettsville, OH
ICP
Twiztid
Dark Lotus
Jumpsteady
Dope
Esham
Blaze
Zug Izland
Vanilla Ice
Killah Priest
Kottonmouth Kings
ABK
Bushwick Bill
2002: Peoria, IL
ICP
Twiztid
Dark Lotus
Blaze
ABK
Psychopathic Rydas
Ghoultown
Kittie
Zug Izland
Mystery Guest
Mack 10
Bubba Sparxxx
2001: Toledo, OH
ICP
Twiztid
Blaze
Dark Lotus
Organ Grinders
Myzery
The Suicide Machines
Marz
Bone Thugs N Harmony
Psychopathic Rydas
Vanilla Ice
Three 6 Mafia
2000: Novi, MI
ICP
Twiztid
Blaze
Psychopathic Rydas
Project Born
Kottonmouth Kings
Myzery