Acting

John Wisniski Jr.

Born 1951-09-20 · Seattle, Washington, USA

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.

Credits

Newest first

Midnight Massacre
as Caepio
2025
Biography: WWE Legends
as Greg "The Hammer" Valentine
2021
WWE's Most Wanted Treasures
as Greg "The Hammer" Valentine
2021
Chris Jericho's 30th Anniversary Celebration
as Greg "The Hammer" Valentine
2020
Undertaker: The Last Ride
as Greg Valentine (archive footage)
2020
All Elite Wrestling: Dynamite
as Greg Valentine
2019
350 Days
as Self
2019
Headstrong
as Self
2019
WWE: The U.S. Championship: A Legacy of Greatness
as Greg 'The Hammer' Valentine (archive footage)
2016
Behind the Ropes: The Greatest Fraternity in the World
as Himself
2015
At What Cost? Anatomy of Professional Wrestling
as Himself
2015
WWE: 150 Best Pay-Per-View Matches, Vol 1
as Himself
2014
WWE: Starrcade - The Essential Collection
as Himself
2012
JCW Legends and Icons
2011
Timeline The History of WWE – 1985 – As Told By Greg Valentine
as Himself
2011
WWE: The History Of The Intercontinental Championship
as Himself
2008
WWE: The History Of The WWE Championship
2006
The Greatest Wrestling Stars of the '80s
as Self
2005
World Wrestling Legends: 6:05 - The Reunion
as Greg Valentine
2005
WWE Hall of Fame 2004
as Self
2004
Heroes of Wrestling
as Greg "The Hammer" Valentine
1999
WCW World War 3 1997
as Greg "The Hammer" Valentine
1997
AWF Warriors of Wrestling
as Greg "The Hammer" Valentine
1995
WWE Royal Rumble 1994
as Greg "The Hammer" Valentine
1994
WWE Survivor Series 1993
as The Blue Knight
1993
Raw
as Greg "The Hammer" Valentine
1993
The Immortal Hulk Hogan
as Greg Valentine
1992
WCW Clash of The Champions XX: 20th Anniversary
as Greg "The Hammer" Valentine
1992
WCW Beach Blast
as Greg "The Hammer" Valentine
1992
WCW WrestleWar 1992
as Greg "The Hammer" Valentine
1992
WWE SuperTape: Volume 5
as Greg "The Hammer" Valentine
1992
WWE Royal Rumble 1992
as Greg "The Hammer" Valentine
1992
WWE Rampage '91
as Greg "The Hammer" Valentine
1991
WWE SummerSlam 1991
as Greg "The Hammer" Valentine
1991
WWE WrestleFest '91
as Greg "The Hammer" Valentine
1991
WWE U.K. Rampage 1991
as Greg "The Hammer" Valentine
1991
WWE Mega Matches
as Greg "The Hammer" Valentine
1991
WWE WrestleMania VII
as Greg "The Hammer" Valentine
1991
WWE Superstars & Stripes Forever: The March to WrestleMania VII
as Greg "The Hammer" Valentine
1991
WWE Funniest Moments
as Greg "The Hammer" Valentine
1991
WWE Royal Rumble 1991
as Greg "The Hammer" Valentine
1991
WWE Survivor Series 1990
as Greg "The Hammer" Valentine
1990
WWE Hottest Matches
as Greg "The Hammer" Valentine
1990
Battle of the WWE Superstars
as Greg Valentine
1990
WWE SuperTape: Volume 2
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
Wrestling Superheroes
as Greg "The Hammer" Valentine
1990
WWE Royal Rumble 1990
as Greg "The Hammer" Valentine
1990
WWE Survivor Series 1989
as Greg "The Hammer" Valentine
1989
WWE SummerSlam 1989
as Greg Valentine
1989
Demolition: Witness the Power
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
The Ultimate Warrior
as Greg "The Hammer" Valentine
1989
WWE Wrestling at The Meadowlands: May '89
as Greg "The Hammer" Valentine
1989
WWE Maple Leaf Wrestling: April '89
as Greg "The Hammer" Valentine
1989
WWE WrestleMania V
as Greg "The Hammer" Valentine
1989
WWE Los Angeles Wrestling: January '89
as Greg "The Hammer" Valentine
1989
WWE Royal Rumble 1989
as Greg "The Hammer" Valentine
1989
WWE Los Angeles Wrestling: December '88
as Greg "The Hammer" Valentine
1988
WWE Survivor Series 1988
as Greg "The Hammer" Valentine
1988
Macho Madness
as Greg "The Hammer" Valentine
1988
WWE U.K. Rampage 1988
as Greg "The Hammer" Valentine
1988
WWE Wrestling at The Meadowlands: September '88
as Greg "The Hammer" Valentine
1988
The Best of the WWF: volume 16 Around the World
as Greg "The Hammer" Valentine
1988
WWE Maple Leaf Wrestling: July '88
as Greg "The Hammer" Valentine
1988
WWE Maple Leaf Wrestling: April '88
as Greg "The Hammer" Valentine
1988
WWE WrestleMania IV
as Greg "The Hammer" Valentine
1988
Clash of the Champions
as Greg "The Hammer" Valentine
1988
Brutus "The Barber" Beefcake
as Greg "The Hammer" Valentine
1988
The Best of the WWF: volume 14
as Greg "The Hammer" Valentine
1987
Wrestling's Most Embarrassing Moments
as Greg "The Hammer" Valentine
1987
WWE Houston Wrestling: December '87
as Greg "The Hammer" Valentine
1987
WWE Survivor Series 1987
as Greg Valentine
1987
WWE Houston Wrestling: October '87
as Greg "The Hammer" Valentine
1987
WWE Maple Leaf Wrestling: June '87
as Greg "The Hammer" Valentine
1987
The Best of the WWF: volume 11
as Greg "The Hammer" Valentine
1987
WWE WrestleMania III
as Greg "The Hammer" Valentine
1987
The Best of the WWF: volume 10
as Greg "The Hammer" Valentine
1987