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.
Acted in 84
2020s
- 2025
Midnight Massacre
Caepio
- 2021
- 2020
Chris Jericho's 30th Anniversary Celebration
Greg "The Hammer" Valentine
Undertaker: The Last Ride
Greg Valentine (archive footage) · 1 episode
2010s
- 2019
- 2016
WWE: The U.S. Championship: A Legacy of Greatness
Greg 'The Hammer' Valentine (archive footage)
2000s
- 2006
WWE: The History Of The WWE Championship
Movie
1990s
- 1999
Heroes of Wrestling
Greg "The Hammer" Valentine
- 1997
WCW World War 3 1997
Greg "The Hammer" Valentine
- 1994
WWE Royal Rumble 1994
Greg "The Hammer" Valentine
- 1993
WWE Survivor Series 1993
The Blue Knight
- 1992
The Immortal Hulk Hogan
Greg Valentine
WCW Clash of The Champions XX: 20th Anniversary
Greg "The Hammer" Valentine
WCW Beach Blast
Greg "The Hammer" Valentine
WCW WrestleWar 1992
Greg "The Hammer" Valentine
WWE SuperTape: Volume 5
Greg "The Hammer" Valentine
WWE Royal Rumble 1992
Greg "The Hammer" Valentine
- 1991
WWE Rampage '91
Greg "The Hammer" Valentine
WWE SummerSlam 1991
Greg "The Hammer" Valentine
WWE WrestleFest '91
Greg "The Hammer" Valentine
WWE U.K. Rampage 1991
Greg "The Hammer" Valentine
WWE Mega Matches
Greg "The Hammer" Valentine
WWE WrestleMania VII
Greg "The Hammer" Valentine
WWE Superstars & Stripes Forever: The March to WrestleMania VII
Greg "The Hammer" Valentine
WWE Funniest Moments
Greg "The Hammer" Valentine
WWE Royal Rumble 1991
Greg "The Hammer" Valentine
- 1990
WWE Survivor Series 1990
Greg "The Hammer" Valentine
WWE Hottest Matches
Greg "The Hammer" Valentine
Battle of the WWE Superstars
Greg Valentine
WWE SuperTape: Volume 2
Greg "The Hammer" Valentine
WWF/AJPW/NJPW Wrestling Summit
Movie
WWE The Ultimate Challenge Special: The March to WrestleMania VI
Greg "The Hammer" Valentine
Wrestling Superheroes
Greg "The Hammer" Valentine
WWE Royal Rumble 1990
Greg "The Hammer" Valentine
1980s
- 1989
WWE Survivor Series 1989
Greg "The Hammer" Valentine
WWE SummerSlam 1989
Greg Valentine
Demolition: Witness the Power
Greg "The Hammer" Valentine
Fan Favorites
Greg Valentine
The Best of the WWF: volume 20
Greg "The Hammer" Valentine
The Ultimate Warrior
Greg "The Hammer" Valentine
WWE WrestleMania V
Greg "The Hammer" Valentine
WWE Royal Rumble 1989
Greg "The Hammer" Valentine
- 1988
WWE Survivor Series 1988
Greg "The Hammer" Valentine
Macho Madness
Greg "The Hammer" Valentine
The Best of the WWF: volume 16 Around the World
Greg "The Hammer" Valentine
WWE WrestleMania IV
Greg "The Hammer" Valentine
Brutus "The Barber" Beefcake
Greg "The Hammer" Valentine
- 1987
The Best of the WWF: volume 14
Greg "The Hammer" Valentine
Wrestling's Most Embarrassing Moments
Greg "The Hammer" Valentine
WWE Survivor Series 1987
Greg Valentine
The Best of the WWF: volume 11
Greg "The Hammer" Valentine
WWE WrestleMania III
Greg "The Hammer" Valentine
The Best of the WWF: volume 10
Greg "The Hammer" Valentine
Bob Uecker's Wacky World of Sports
Greg "The Hammer" Valentine
- 1986
Inside the Steel Cage
Greg "The Hammer" Valentine
The British Bulldogs
Greg Valentine
The Best of the WWF: volume 9
Greg "The Hammer" Valentine
WWE The Big Event
Greg "The Hammer" Valentine
The Best of the WWF: volume 7
Greg "The Hammer" Valentine
Ricky "The Dragon" Steamboat
Greg "The Hammer" Valentine
WrestleMania II
Greg "The Hammer" Valentine
WWE Grudge Match
Greg "The Hammer" Valentine
Tag Team Champions
Greg Valentine
The Best of the WWF: volume 5
Greg "The Hammer" Valentine
- 1985
The WWF's Amazing Managers
Greg 'The Hammer' Valentine
The Best of the WWF: volume 4
Greg "The Hammer" Valentine
WrestleMania
Greg "The Hammer" Valentine
Most Unusual Matches
Greg "The Hammer" Valentine
- 1984
WWE The Brawl to End it All
Greg "The Hammer" Valentine
NWA Boogie Jam
Greg Valentine
- 1983
NWA Starrcade 1983
Greg "The Hammer" Valentine
WCW Arena Shows
Greg Valentine · 1 episode
NWA The Final Conflict
Greg Valentine
- 1981
Appearances9
2010s
- 2019
350 Days
Self
- 2015
Behind the Ropes: The Greatest Fraternity in the World
Himself
At What Cost? Anatomy of Professional Wrestling
Himself
- 2012
WWE: Starrcade - The Essential Collection
Himself
- 2011
Timeline The History of WWE – 1985 – As Told By Greg Valentine
Himself
2000s
- 2008
WWE: The History Of The Intercontinental Championship
Himself
- 2005
The Greatest Wrestling Stars of the '80s
Self
- 2004
WWE Hall of Fame 2004
Self