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.
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.
External links
IMDb: https://www.imdb.com/title/nm0884233
Wikipedia: https://www.wikidata.org/wiki/Q1335828
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Filmography (Movies)
Midnight Massacre
Character:Caepio
Release Date:25/10/2025
Chris Jericho's 30th Anniversary Celebration
Character:Greg "The Hammer" Valentine
Release Date:07/10/2020
350 Days
Character:Self
Release Date:02/04/2019
WWE: The U.S. Championship: A Legacy of Greatness
Character:Greg 'The Hammer' Valentine (archive footage)
Release Date:26/04/2016
Behind the Ropes: The Greatest Fraternity in the World
Character:Himself
Release Date:31/12/2015
At What Cost? Anatomy of Professional Wrestling
Character:Himself
Release Date:25/04/2015
WWE: 150 Best Pay-Per-View Matches, Vol 1
Character:Himself
Release Date:11/03/2014
WWE: Starrcade - The Essential Collection
Character:Himself
Release Date:03/01/2012
JCW Legends and Icons
Character:
Release Date:08/12/2011
Timeline: The History of WWE – 1985 – As Told By Greg Valentine
Character:Himself
Release Date:01/06/2011
WWE: The History Of The Intercontinental Championship
Character:Himself
Release Date:25/11/2008
WWE: The History Of The WWE Championship
Character:
Release Date:05/09/2006
The Greatest Stars of the 80's
Character:Self
Release Date:14/06/2005
World Wrestling Legends: 6:05 - The Reunion
Character:Greg Valentine
Release Date:29/04/2005
WWE Hall of Fame 2004
Character:Self
Release Date:12/03/2004
Heroes of Wrestling
Character:Greg "The Hammer" Valentine
Release Date:10/10/1999
WCW World War 3 1997
Character:Greg "The Hammer" Valentine
Release Date:23/11/1997
WWE Royal Rumble 1994
Character:Greg "The Hammer" Valentine
Release Date:22/01/1994
WWE Survivor Series 1993
Character:The Blue Knight
Release Date:24/11/1993
The Immortal Hulk Hogan
Character:Greg Valentine
Release Date:05/11/1992
WCW Clash of The Champions XX: 20th Anniversary
Character:Greg "The Hammer" Valentine
Release Date:02/09/1992
WCW Beach Blast
Character:Greg "The Hammer" Valentine
Release Date:20/06/1992
WCW WrestleWar 1992
Character:Greg "The Hammer" Valentine
Release Date:17/05/1992
WWE SuperTape: Volume 5
Character:Greg "The Hammer" Valentine
Release Date:27/02/1992
WWE Royal Rumble 1992
Character:Greg "The Hammer" Valentine
Release Date:19/01/1992
WWE Rampage '91
Character:Greg "The Hammer" Valentine
Release Date:24/10/1991
WWE SummerSlam 1991
Character:Greg "The Hammer" Valentine
Release Date:26/08/1991
WWE WrestleFest '91
Character:Greg "The Hammer" Valentine
Release Date:25/07/1991
WWE U.K. Rampage 1991
Character:Greg "The Hammer" Valentine
Release Date:21/04/1991
WWE Mega Matches
Character:Greg "The Hammer" Valentine
Release Date:28/03/1991
WWE WrestleMania VII
Character:Greg "The Hammer" Valentine
Release Date:24/03/1991
WWE Superstars & Stripes Forever: The March to WrestleMania VII
Character:Greg "The Hammer" Valentine
Release Date:17/03/1991
WWE Funniest Moments
Character:Greg "The Hammer" Valentine
Release Date:27/02/1991
WWE Royal Rumble 1991
Character:Greg "The Hammer" Valentine
Release Date:19/01/1991
WWE Survivor Series 1990
Character:Greg "The Hammer" Valentine
Release Date:22/11/1990
WWE Hottest Matches
Character:Greg "The Hammer" Valentine
Release Date:25/10/1990
Battle of the WWE Superstars
Character:Greg Valentine
Release Date:23/08/1990
WWE SuperTape: Volume 2
Character:Greg "The Hammer" Valentine
Release Date:25/07/1990
WWF/AJPW/NJPW Wrestling Summit
Character:
Release Date:13/04/1990
WWE The Ultimate Challenge Special: The March to WrestleMania VI
Character:Greg "The Hammer" Valentine
Release Date:25/03/1990
Wrestling Superheroes
Character:Greg "The Hammer" Valentine
Release Date:21/03/1990
WWE Royal Rumble 1990
Character:Greg "The Hammer" Valentine
Release Date:21/01/1990
WWE Survivor Series 1989
Character:Greg "The Hammer" Valentine
Release Date:23/11/1989
WWE SummerSlam 1989
Character:Greg Valentine
Release Date:28/08/1989
Demolition: Witness the Power
Character:Greg "The Hammer" Valentine
Release Date:09/08/1989
Fan Favorites
Character:Greg Valentine
Release Date:09/08/1989
The Best of the WWF: volume 20
Character:Greg "The Hammer" Valentine
Release Date:09/08/1989
The Ultimate Warrior
Character:Greg "The Hammer" Valentine
Release Date:28/06/1989
WWE Wrestling at The Meadowlands: May '89
Character:Greg "The Hammer" Valentine
Release Date:08/05/1989
WWE Maple Leaf Wrestling: April '89
Character:Greg "The Hammer" Valentine
Release Date:23/04/1989
WWE WrestleMania V
Character:Greg "The Hammer" Valentine
Release Date:02/04/1989
WWE Los Angeles Wrestling: January '89
Character:Greg "The Hammer" Valentine
Release Date:29/01/1989
WWE Royal Rumble 1989
Character:Greg "The Hammer" Valentine
Release Date:15/01/1989
WWE Los Angeles Wrestling: December '88
Character:Greg "The Hammer" Valentine
Release Date:17/12/1988
WWE Survivor Series 1988
Character:Greg "The Hammer" Valentine
Release Date:24/11/1988
Macho Madness
Character:Greg "The Hammer" Valentine
Release Date:19/10/1988
WWE U.K. Rampage 1988
Character:Greg "The Hammer" Valentine
Release Date:07/10/1988
WWE Wrestling at The Meadowlands: September '88
Character:Greg "The Hammer" Valentine
Release Date:11/09/1988
The Best of the WWF: volume 16 Around the World
Character:Greg "The Hammer" Valentine
Release Date:27/07/1988
WWE Maple Leaf Wrestling: July '88
Character:Greg "The Hammer" Valentine
Release Date:24/07/1988
WWE Maple Leaf Wrestling: April '88
Character:Greg "The Hammer" Valentine
Release Date:24/04/1988
WWE WrestleMania IV
Character:Greg "The Hammer" Valentine
Release Date:27/03/1988
WrestleMania IV (Duplicated)
Character:Greg 'The Hammer' Valentine
Release Date:27/03/1988
Brutus "The Barber" Beefcake
Character:Greg "The Hammer" Valentine
Release Date:03/03/1988
The Best of the WWF: volume 14
Character:Greg "The Hammer" Valentine
Release Date:15/12/1987
Wrestling's Most Embarrassing Moments
Character:Greg "The Hammer" Valentine
Release Date:15/12/1987
WWE Houston Wrestling: December '87
Character:Greg "The Hammer" Valentine
Release Date:11/12/1987
WWE Survivor Series 1987
Character:Greg Valentine
Release Date:26/11/1987
WWE Houston Wrestling: October '87
Character:Greg "The Hammer" Valentine
Release Date:09/10/1987
WWE Maple Leaf Wrestling: June '87
Character:Greg "The Hammer" Valentine
Release Date:28/06/1987
The Best of the WWF: volume 11
Character:Greg "The Hammer" Valentine
Release Date:24/06/1987
WWE WrestleMania III
Character:Greg "The Hammer" Valentine
Release Date:29/03/1987
WrestleMania III (Duplicated)
Character:Greg 'The Hammer' Valentine
Release Date:29/03/1987
The Best of the WWF: volume 10
Character:Greg "The Hammer" Valentine
Release Date:01/03/1987
WWE Maple Leaf Wrestling: January '87
Character:Greg "The Hammer" Valentine
Release Date:11/01/1987
WWE Wrestling at The Meadowlands: January '87
Character:Greg "The Hammer" Valentine
Release Date:05/01/1987
Bob Uecker's Wacky World of Sports
Character:Greg "The Hammer" Valentine
Release Date:01/01/1987
Inside the Steel Cage
Character:Greg "The Hammer" Valentine
Release Date:11/12/1986
WWE Houston Wrestling: October '86
Character:Greg "The Hammer" Valentine
Release Date:19/10/1986
The British Bulldogs
Character:Greg Valentine
Release Date:15/10/1986
The Best of the WWF: volume 9
Character:Greg "The Hammer" Valentine
Release Date:15/10/1986
WWE The Big Event
Character:Greg "The Hammer" Valentine
Release Date:28/08/1986
The Best of the WWF: volume 7
Character:Greg "The Hammer" Valentine
Release Date:06/06/1986
Ricky "The Dragon" Steamboat
Character:Greg "The Hammer" Valentine
Release Date:02/05/1986
WrestleMania II
Character:Greg "The Hammer" Valentine
Release Date:07/04/1986
WrestleMania 2 (Duplicated)
Character:Greg 'The Hammer' Valentine
Release Date:07/04/1986
WWE Grudge Match
Character:Greg "The Hammer" Valentine
Release Date:27/03/1986
Tag Team Champions
Character:Greg Valentine
Release Date:01/03/1986
The Best of the WWF: volume 5
Character:Greg "The Hammer" Valentine
Release Date:01/01/1986
The WWF's Amazing Managers
Character:Greg 'The Hammer' Valentine
Release Date:31/12/1985
WWE Maple Leaf Wrestling: October '85
Character:Greg "The Hammer" Valentine
Release Date:13/10/1985
WWE Maple Leaf Wrestling: September '85
Character:Greg "The Hammer" Valentine
Release Date:22/09/1985
The Best of the WWF: volume 4
Character:Greg "The Hammer" Valentine
Release Date:01/09/1985
WWE Maple Leaf Wrestling: April '85
Character:Greg "The Hammer" Valentine
Release Date:21/04/1985
WrestleMania
Character:Greg "The Hammer" Valentine
Release Date:31/03/1985
Most Unusual Matches
Character:Greg "The Hammer" Valentine
Release Date:01/01/1985
WWF Hulkamania 1
Character:Greg Valentine
Release Date:01/01/1985
WWE Maple Leaf Wrestling: October '84
Character:Greg "The Hammer" Valentine
Release Date:21/10/1984
WWE Maple Leaf Wrestling: September '84
Character:Greg "The Hammer" Valentine
Release Date:23/09/1984
WWE The Brawl to End it All
Character:Greg "The Hammer" Valentine
Release Date:23/07/1984
NWA Boogie Jam
Character:Greg Valentine
Release Date:17/03/1984
NWA Starrcade 1983
Character:Greg "The Hammer" Valentine
Release Date:24/11/1983
NWA The Race to Starrcade
Character:Greg Valentine
Release Date:07/09/1983
NWA The Final Conflict
Character:Greg Valentine
Release Date:12/03/1983
NWA Sam Muchnick Retirement Show
Character:Greg Valentine
Release Date:01/01/1982
Television Appearances
Biography: WWE Legends
Character:Greg "The Hammer" Valentine
WWE's Most Wanted Treasures
Character:Greg "The Hammer" Valentine
Undertaker: The Last Ride
Character:Greg Valentine (archive footage)
All Elite Wrestling: Dynamite
Character:Greg Valentine
AWF Warriors of Wrestling
Character:Greg "The Hammer" Valentine
Raw
Character:Greg "The Hammer" Valentine
Clash of the Champions
Character:Greg "The Hammer" Valentine
WWF Wrestling Challenge
Character:Greg Valentine
WWF Wrestling Challenge
Character:Greg "The Hammer" Valentine
Saturday Night's Main Event
Character:Greg Valentine
Saturday Night's Main Event
Character:
Saturday Night's Main Event
Character:Greg "The Hammer" Valentine
Tuesday Night Titans
Character:Greg "The Hammer" Valentine
Tuesday Night Titans
Character:Greg Valentine
WCW Arena Shows
Character:Greg Valentine
Mid-Atlantic Championship Wrestling
Character:Greg Valentine
WWF All-Star Wrestling
Character:Greg Valentine
WWF All-Star Wrestling
Character:Greg 'The Hammer' Valentine
WWE Old School
Character:Greg Valentine
WWE Old School
Character:Greg "The Hammer" Valentine