John Wisniski Jr.
Born: 1951-09-20 in 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.
Filmography
2025
- Midnight Massacre as Caepio
2021
- Biography: WWE Legends as Greg "The Hammer" Valentine
- WWE's Most Wanted Treasures as Greg "The Hammer" Valentine
2020
- Undertaker: The Last Ride as Greg Valentine (archive footage)
- Chris Jericho's 30th Anniversary Celebration as Greg "The Hammer" Valentine
2019
- All Elite Wrestling: Dynamite as Greg Valentine
- 350 Days as Self
2016
- WWE: The U.S. Championship: A Legacy of Greatness as Greg 'The Hammer' Valentine (archive footage)
2015
2014
- WWE: 150 Best Pay-Per-View Matches, Vol 1 as Himself
2012
- WWE: Starrcade - The Essential Collection as Himself
2011
2008
2005
- The Greatest Wrestling Stars of the '80s as Self
- World Wrestling Legends: 6:05 - The Reunion as Greg Valentine
2004
- WWE Hall of Fame 2004 as Self
1999
- Heroes of Wrestling as Greg "The Hammer" Valentine
1997
- WCW World War 3 1997 as Greg "The Hammer" Valentine
1995
- AWF Warriors of Wrestling as Greg "The Hammer" Valentine
1994
- WWE Royal Rumble 1994 as Greg "The Hammer" Valentine
1993
- Raw as Greg "The Hammer" Valentine
- WWE Survivor Series 1993 as The Blue Knight
1992
- WWE Royal Rumble 1992 as Greg "The Hammer" Valentine
- WCW WrestleWar 1992 as Greg "The Hammer" Valentine
- WCW Beach Blast as Greg "The Hammer" Valentine
- WCW Clash of The Champions XX: 20th Anniversary as Greg "The Hammer" Valentine
- WWE SuperTape: Volume 5 as Greg "The Hammer" Valentine
- The Immortal Hulk Hogan as Greg Valentine
1991
- WWE WrestleFest '91 as Greg "The Hammer" Valentine
- WWE WrestleMania VII as Greg "The Hammer" Valentine
- WWE Royal Rumble 1991 as Greg "The Hammer" Valentine
- WWE SummerSlam 1991 as Greg "The Hammer" Valentine
- WWE Superstars & Stripes Forever: The March to WrestleMania VII as Greg "The Hammer" Valentine
- WWE Rampage '91 as Greg "The Hammer" Valentine
- WWE Mega Matches as Greg "The Hammer" Valentine
- WWE Funniest Moments as Greg "The Hammer" Valentine
- WWE U.K. Rampage 1991 as Greg "The Hammer" Valentine
1990
- WWE Royal Rumble 1990 as Greg "The Hammer" Valentine
- WWE Survivor Series 1990 as Greg "The Hammer" Valentine
- WWE Hottest Matches as Greg "The Hammer" Valentine
- WWF/AJPW/NJPW Wrestling Summit
- Wrestling Superheroes as Greg "The Hammer" Valentine
- Battle of the WWE Superstars as Greg Valentine
- WWE SuperTape: Volume 2 as Greg "The Hammer" Valentine
- WWE The Ultimate Challenge Special: The March to WrestleMania VI as Greg "The Hammer" Valentine
1989
- WWE Survivor Series 1989 as Greg "The Hammer" Valentine
- WWE Royal Rumble 1989 as Greg "The Hammer" Valentine
- WWE SummerSlam 1989 as Greg Valentine
- Demolition: Witness the Power as Greg "The Hammer" Valentine
- WWE WrestleMania V as Greg "The Hammer" Valentine
- WWE Wrestling at The Meadowlands: May '89 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: April '89 as Greg "The Hammer" Valentine
- The Best of the WWF: volume 20 as Greg "The Hammer" Valentine
- The Ultimate Warrior as Greg "The Hammer" Valentine
- WWE Los Angeles Wrestling: January '89 as Greg "The Hammer" Valentine
- Fan Favorites as Greg Valentine
1988
- Clash of the Champions as Greg "The Hammer" Valentine
- WWE Survivor Series 1988 as Greg "The Hammer" Valentine
- WWE WrestleMania IV as Greg "The Hammer" Valentine
- WWE Wrestling at The Meadowlands: September '88 as Greg "The Hammer" Valentine
- Brutus "The Barber" Beefcake as Greg "The Hammer" Valentine
- The Best of the WWF: volume 16 Around the World as Greg "The Hammer" Valentine
- WWE Los Angeles Wrestling: December '88 as Greg "The Hammer" Valentine
- Macho Madness as Greg "The Hammer" Valentine
- WWE U.K. Rampage 1988 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: July '88 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: April '88 as Greg "The Hammer" Valentine
1987
- WWE WrestleMania III as Greg "The Hammer" Valentine
- WWE Survivor Series 1987 as Greg Valentine
- Bob Uecker's Wacky World of Sports as Greg "The Hammer" Valentine
- Wrestling's Most Embarrassing Moments as Greg "The Hammer" Valentine
- WWE Houston Wrestling: December '87 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: January '87 as Greg "The Hammer" Valentine
- WWE Wrestling at The Meadowlands: January '87 as Greg "The Hammer" Valentine
- WWE Houston Wrestling: October '87 as Greg "The Hammer" Valentine
- The Best of the WWF: volume 14 as Greg "The Hammer" Valentine
- The Best of the WWF: volume 10 as Greg "The Hammer" Valentine
- The Best of the WWF: volume 11 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: June '87 as Greg "The Hammer" Valentine
1986
- WWF Wrestling Challenge as Greg Valentine
- WWF Superstars as Greg "The Hammer" Valentine
- WrestleMania II as Greg "The Hammer" Valentine
- WWE Grudge Match as Greg "The Hammer" Valentine
- Ricky "The Dragon" Steamboat as Greg "The Hammer" Valentine
- WWE The Big Event as Greg "The Hammer" Valentine
- WWE Houston Wrestling: October '86 as Greg "The Hammer" Valentine
- The Best of the WWF: volume 7 as Greg "The Hammer" Valentine
- Inside the Steel Cage as Greg "The Hammer" Valentine
- The Best of the WWF: volume 5 as Greg "The Hammer" Valentine
- The British Bulldogs as Greg Valentine
- The Best of the WWF: volume 9 as Greg "The Hammer" Valentine
- Tag Team Champions as Greg Valentine
1985
- WWE Saturday Night's Main Event as Greg Valentine
- WWE Pay Per View
- WrestleMania as Greg "The Hammer" Valentine
- The WWF's Amazing Managers as Greg 'The Hammer' Valentine
- WWE Maple Leaf Wrestling: April '85 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: October '85 as Greg "The Hammer" Valentine
- The Best of the WWF: volume 4 as Greg "The Hammer" Valentine
- Most Unusual Matches as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: September '85 as Greg "The Hammer" Valentine
- WWF Hulkamania 1 as Greg Valentine
- WWE Maple Leaf Wrestling: December '85 as Greg "The Hammer" Valentine
1984
- Tuesday Night Titans as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: October '84 as Greg "The Hammer" Valentine
- WWE Maple Leaf Wrestling: September '84 as Greg "The Hammer" Valentine
- NWA Boogie Jam as Greg Valentine
- WWE The Brawl to End it All as Greg "The Hammer" Valentine
1983
- WCW Arena Shows as Greg Valentine
- NWA Starrcade 1983 as Greg "The Hammer" Valentine
- NWA The Race to Starrcade as Greg Valentine
- NWA The Final Conflict as Greg Valentine
1982
- NWA Sam Muchnick Retirement Show as Greg Valentine
1981
- Mid-Atlantic Championship Wrestling as Greg Valentine
1975
- WWF All-Star Wrestling as Greg Valentine
1973
- WWE Old School as Greg Valentine