John Wisniski Jr.

male

Born on September 20, 1951 (74 years old)

From Seattle, Washington, USA

Known for Acting

Biography

John Wisniski, Jr. is an American professional wrestler, better known as Greg "The Hammer" Valentine. He is the son of wrestler Johnny Valentine. In the course of his career, which has spanned over four decades, Valentine has held more than 40 championships, including the NWA United States Heavyweight Championship and the WWE Intercontinental Championship. An alumnus of WWE and World Championship Wrestling, he was inducted to the WWE Hall of Fame in 2004.

Cast Credits

2025
- Midnight Massacre
  as
  Caepio
  2025
2016
- WWE: The U.S. Championship: A Legacy of Greatness
  as
  Greg 'The Hammer' Valentine (archive footage)
  2016
2015
- Behind the Ropes: The Greatest Fraternity in the World
  as
  Himself
  2015
- At What Cost? Anatomy of Professional Wrestling
  as
  Himself
  2015
2011
- Timeline: The History of WWE – 1985 – As Told By Greg Valentine
  as
  Himself
  2011
- no image
  JCW Legends and Icons
  2011
2005
- no image
  World Wrestling Legends: 6:05 - The Reunion
  as
  Greg Valentine
  2005
- The Greatest Stars of the 80's
  as
  Self
  2005
1997
- WCW World War 3 1997
  as
  Greg "The Hammer" Valentine
  1997
1993
- WWE Survivor Series 1993
  as
  The Blue Knight
  1993
- Raw
  as
  Greg "The Hammer" Valentine
  1993
1992
- WWE SuperTape: Volume 5
  as
  Greg "The Hammer" Valentine
  1992
- WCW Beach Blast
  as
  Greg "The Hammer" Valentine
  1992
- WCW Clash of The Champions XX: 20th Anniversary
  as
  Greg "The Hammer" Valentine
  1992
- WWE Royal Rumble 1992
  as
  Greg "The Hammer" Valentine
  1992
- WCW Wrestle War: WarGames
  as
  Greg "The Hammer" Valentine
  1992
- The Immortal Hulk Hogan
  as
  Greg Valentine
  1992
1991
- WWE WrestleFest '91
  as
  Greg "The Hammer" Valentine
  1991
- WWE Mega Matches
  as
  Greg "The Hammer" Valentine
  1991
- WWE Rampage '91
  as
  Greg "The Hammer" Valentine
  1991
- WWE WrestleMania VII
  as
  Greg "The Hammer" Valentine
  1991
- WWE Royal Rumble 1991
  as
  Greg "The Hammer" Valentine
  1991
- WWE SummerSlam 1991
  as
  Greg "The Hammer" Valentine
  1991
- WWE Superstars & Stripes Forever: The March to WrestleMania VII
  as
  Greg "The Hammer" Valentine
  1991
- WWE U.K. Rampage 1991
  as
  Greg "The Hammer" Valentine
  1991
- WWE Funniest Moments
  as
  Greg "The Hammer" Valentine
  1991
1990
- Battle of the WWE Superstars
  as
  Greg Valentine
  1990
- WWE Hottest Matches
  as
  Greg "The Hammer" Valentine
  1990
- WWE SuperTape: Volume 2
  as
  Greg "The Hammer" Valentine
  1990
- WWE Survivor Series 1990
  as
  Greg "The Hammer" Valentine
  1990
- WWF/AJPW/NJPW Wrestling Summit
  1990
- WWE The Ultimate Challenge Special: The March to WrestleMania VI
  as
  Greg "The Hammer" Valentine
  1990
- WWE Royal Rumble 1990
  as
  Greg "The Hammer" Valentine
  1990
- Wrestling Superheroes
  as
  Greg "The Hammer" Valentine
  1990
1989
- WWE WrestleMania V
  as
  Greg "The Hammer" Valentine
  1989
- WWE Demolition
  as
  Greg "The Hammer" Valentine
  1989
- The Ultimate Warrior
  as
  Greg "The Hammer" Valentine
  1989
- Fan Favorites
  as
  Greg Valentine
  1989
- The Best of the WWF: volume 20
  as
  Greg "The Hammer" Valentine
  1989
- no image
  WWE Maple Leaf Wrestling: April '89
  as
  Greg "The Hammer" Valentine
  1989
- no image
  WWE Los Angeles Wrestling: January '89
  as
  Greg "The Hammer" Valentine
  1989
- no image
  WWE Wrestling at The Meadowlands: May '89
  as
  Greg "The Hammer" Valentine
  1989
- WWE Royal Rumble 1989
  as
  Greg "The Hammer" Valentine
  1989
- WWE Survivor Series 1989
  as
  Greg "The Hammer" Valentine
  1989
- WWE SummerSlam 1989
  as
  Greg Valentine
  1989
1988
- WWE Survivor Series 1988
  as
  Greg "The Hammer" Valentine
  1988
- The Best of the WWF: volume 16 Around the World
  as
  Greg "The Hammer" Valentine
  1988
- no image
  WWE U.K. Rampage 1988
  as
  Greg "The Hammer" Valentine
  1988
- no image
  WWE Los Angeles Wrestling: December '88
  as
  Greg "The Hammer" Valentine
  1988
- no image
  WWE Maple Leaf Wrestling: April '88
  as
  Greg "The Hammer" Valentine
  1988
- no image
  WWE Maple Leaf Wrestling: July '88
  as
  Greg "The Hammer" Valentine
  1988
- no image
  WWE Wrestling at The Meadowlands: September '88
  as
  Greg "The Hammer" Valentine
  1988
- WWE WrestleMania IV
  as
  Greg "The Hammer" Valentine
  1988
- WrestleMania IV
  as
  Greg 'The Hammer' Valentine
  1988
- Macho Madness
  as
  Greg "The Hammer" Valentine
  1988
- Brutus "The Barber" Beefcake
  as
  Greg "The Hammer" Valentine
  1988
1987
- WWE WrestleMania III
  as
  Greg "The Hammer" Valentine
  1987
- Bob Uecker's Wacky World of Sports
  as
  Greg "The Hammer" Valentine
  1987
- The Best of the WWF: volume 10
  as
  Greg "The Hammer" Valentine
  1987
- The Best of the WWF: volume 11
  as
  Greg "The Hammer" Valentine
  1987
- The Best of the WWF: volume 14
  as
  Greg "The Hammer" Valentine
  1987
- no image
  WWE Houston Wrestling: October '87
  as
  Greg "The Hammer" Valentine
  1987
- no image
  WWE Houston Wrestling: December '87
  as
  Greg "The Hammer" Valentine
  1987
- no image
  WWE Maple Leaf Wrestling: January '87
  as
  Greg "The Hammer" Valentine
  1987
- no image
  WWE Maple Leaf Wrestling: June '87
  as
  Greg "The Hammer" Valentine
  1987
- no image
  WWE Wrestling at The Meadowlands: January '87
  as
  Greg "The Hammer" Valentine
  1987
- WWE Survivor Series 1987
  as
  Greg Valentine
  1987
- WrestleMania III
  as
  Greg 'The Hammer' Valentine
  1987
- Wrestling's Most Embarrassing Moments
  as
  Greg "The Hammer" Valentine
  1987
1986
- WrestleMania II
  as
  Greg "The Hammer" Valentine
  1986
- The British Bulldogs
  as
  Greg Valentine
  1986
- Ricky "The Dragon" Steamboat
  as
  Greg "The Hammer" Valentine
  1986
- The Best of the WWF: volume 5
  as
  Greg "The Hammer" Valentine
  1986
- The Best of the WWF: volume 7
  as
  Greg "The Hammer" Valentine
  1986
- The Best of the WWF: volume 9
  as
  Greg "The Hammer" Valentine
  1986
- no image
  WWE Houston Wrestling: October '86
  as
  Greg "The Hammer" Valentine
  1986
- Tag Team Champions
  as
  Greg Valentine
  1986
- WWE The Big Event
  as
  Greg "The Hammer" Valentine
  1986
- WrestleMania 2
  as
  Greg 'The Hammer' Valentine
  1986
- Inside the Steel Cage
  as
  Greg "The Hammer" Valentine
  1986
- WWE Grudge Match
  as
  Greg "The Hammer" Valentine
  1986
- WWF Wrestling Challenge
  as
  Greg Valentine
  1986
- WWF Wrestling Challenge
  as
  Greg "The Hammer" Valentine
  1986
1985
- WrestleMania
  as
  Greg "The Hammer" Valentine
  1985
- The Best of the WWF: volume 4
  as
  Greg "The Hammer" Valentine
  1985
- Most Unusual Matches
  as
  Greg "The Hammer" Valentine
  1985
- WWF Hulkamania 1
  as
  Greg Valentine
  1985
- no image
  WWE Maple Leaf Wrestling: April '85
  as
  Greg "The Hammer" Valentine
  1985
- no image
  WWE Maple Leaf Wrestling: September '85
  as
  Greg "The Hammer" Valentine
  1985
- no image
  WWE Maple Leaf Wrestling: October '85
  as
  Greg "The Hammer" Valentine
  1985
- WrestleMania
  as
  Greg Valentine
  1985
- The WWF's Amazing Managers
  as
  Greg 'The Hammer' Valentine
  1985
- Saturday Night's Main Event
  as
  Greg Valentine
  1985
- Saturday Night's Main Event
  1985
- Saturday Night's Main Event
  as
  Greg "The Hammer" Valentine
  1985
1984
- no image
  WWE Maple Leaf Wrestling: September '84
  as
  Greg "The Hammer" Valentine
  1984
- no image
  WWE Maple Leaf Wrestling: October '84
  as
  Greg "The Hammer" Valentine
  1984
- NWA Boogie Jam
  as
  Greg Valentine
  1984
- WWE The Brawl to End it All
  as
  Greg "The Hammer" Valentine
  1984
- Tuesday Night Titans
  as
  Greg "The Hammer" Valentine
  1984
- Tuesday Night Titans
  as
  Greg Valentine
  1984
1983
- NWA Starrcade 1983
  as
  Greg "The Hammer" Valentine
  1983
- NWA The Final Conflict
  as
  Greg Valentine
  1983
- no image
  NWA The Race to Starrcade
  as
  Greg Valentine
  1983
2021
- Biography: WWE Legends
  as
  Greg "The Hammer" Valentine
  2021
- WWE's Most Wanted Treasures
  as
  Greg "The Hammer" Valentine
  2021
2020
- Chris Jericho's 30th Anniversary Celebration
  as
  Greg "The Hammer" Valentine
  2020
- Undertaker: The Last Ride
  as
  Greg Valentine (archive footage)
  2020
2019
- 350 Days
  as
  Self
  2019
- All Elite Wrestling: Dynamite
  as
  Greg Valentine
  2019
2014
- no image
  WWE: 150 Best Pay-Per-View Matches, Vol 1
  as
  Himself
  2014
2012
- WWE: Starrcade - The Essential Collection
  as
  Himself
  2012
2008
- WWE: The History Of The Intercontinental Championship
  as
  Himself
  2008
2006
- WWE: The History Of The WWE Championship
  2006
2004
- WWE Hall of Fame 2004
  2004
1999
- Heroes of Wrestling
  as
  Greg "The Hammer" Valentine
  1999
1995
- no image
  AWF Warriors of Wrestling
  as
  Greg "The Hammer" Valentine
  1995
1994
- WWE Royal Rumble 1994
  as
  Greg "The Hammer" Valentine
  1994
1982
- no image
  NWA Sam Muchnick Retirement Show
  as
  Greg Valentine
  1982
1981
- Mid-Atlantic Championship Wrestling
  as
  Greg Valentine
  1981
1975
- WWF All-Star Wrestling
  as
  Greg Valentine
  1975
- WWF All-Star Wrestling
  as
  Greg 'The Hammer' Valentine
  1975
1973
- WWE Old School
  as
  Greg Valentine
  1973
- WWE Old School
  as
  Greg "The Hammer" Valentine
  1973

John Wisniski Jr.

Biography

Cast Credits

Midnight Massacre

WWE: The U.S. Championship: A Legacy of Greatness

Behind the Ropes: The Greatest Fraternity in the World

At What Cost? Anatomy of Professional Wrestling

Timeline: The History of WWE – 1985 – As Told By Greg Valentine

JCW Legends and Icons

World Wrestling Legends: 6:05 - The Reunion

The Greatest Stars of the 80's

WCW World War 3 1997

WWE Survivor Series 1993

Raw

WWE SuperTape: Volume 5

WCW Beach Blast

WCW Clash of The Champions XX: 20th Anniversary

WWE Royal Rumble 1992

WCW Wrestle War: WarGames

The Immortal Hulk Hogan

WWE WrestleFest '91

WWE Mega Matches

WWE Rampage '91

WWE WrestleMania VII

WWE Royal Rumble 1991

WWE SummerSlam 1991

WWE Superstars & Stripes Forever: The March to WrestleMania VII

WWE U.K. Rampage 1991

WWE Funniest Moments

Battle of the WWE Superstars

WWE Hottest Matches

WWE SuperTape: Volume 2

WWE Survivor Series 1990

WWF/AJPW/NJPW Wrestling Summit

WWE The Ultimate Challenge Special: The March to WrestleMania VI

WWE Royal Rumble 1990

Wrestling Superheroes

WWE WrestleMania V

WWE Demolition

The Ultimate Warrior

Fan Favorites

The Best of the WWF: volume 20

WWE Maple Leaf Wrestling: April '89

WWE Los Angeles Wrestling: January '89

WWE Wrestling at The Meadowlands: May '89

WWE Royal Rumble 1989

WWE Survivor Series 1989

WWE SummerSlam 1989

WWE Survivor Series 1988

The Best of the WWF: volume 16 Around the World

WWE U.K. Rampage 1988

WWE Los Angeles Wrestling: December '88

WWE Maple Leaf Wrestling: April '88

WWE Maple Leaf Wrestling: July '88

WWE Wrestling at The Meadowlands: September '88

WWE WrestleMania IV

WrestleMania IV

Macho Madness

Brutus "The Barber" Beefcake

WWE WrestleMania III

Bob Uecker's Wacky World of Sports

The Best of the WWF: volume 10

The Best of the WWF: volume 11

The Best of the WWF: volume 14

WWE Houston Wrestling: October '87

WWE Houston Wrestling: December '87

WWE Maple Leaf Wrestling: January '87

WWE Maple Leaf Wrestling: June '87

WWE Wrestling at The Meadowlands: January '87

WWE Survivor Series 1987

WrestleMania III

Wrestling's Most Embarrassing Moments

WrestleMania II

The British Bulldogs

Ricky "The Dragon" Steamboat

The Best of the WWF: volume 5

The Best of the WWF: volume 7

The Best of the WWF: volume 9

WWE Houston Wrestling: October '86

Tag Team Champions