Known For
Acting
Known Credits
126
Gender
Male
Birthday
September 20, 1951 (74 years old)
Place of Birth
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.
| 2025 | Midnight Massacreas Caepio | |
| 2021 | WWE's Most Wanted Treasuresas Greg "The Hammer" Valentine | |
| 2021 | Biography: WWE Legendsas Greg "The Hammer" Valentine | |
| 2020 | Chris Jericho's 30th Anniversary Celebrationas Greg "The Hammer" Valentine | |
| 2020 | Undertaker: The Last Rideas Greg Valentine (archive footage) | |
| 2019 | All Elite Wrestling: Dynamiteas Greg Valentine | |
| 2019 | 350 Daysas Self | |
| 2019 | Headstrongas Self | |
| 2016 | WWE: The U.S. Championship: A Legacy of Greatnessas Greg 'The Hammer' Valentine (archive footage) | |
| 2015 | Behind the Ropes: The Greatest Fraternity in the Worldas Himself | |
| 2015 | At What Cost? Anatomy of Professional Wrestlingas Himself | |
| 2014 | WWE: 150 Best Pay-Per-View Matches, Vol 1as Himself | |
| 2012 | WWE: Starrcade - The Essential Collectionas Himself | |
| 2011 | JCW Legends and Iconsas | |
| 2011 | Timeline The History of WWE – 1985 – As Told By Greg Valentineas Himself | |
| 2008 | WWE: The History Of The Intercontinental Championshipas Himself | |
| 2006 | WWE: The History Of The WWE Championshipas | |
| 2005 | The Greatest Wrestling Stars of the '80sas Self | |
| 2005 | World Wrestling Legends: 6:05 - The Reunionas Greg Valentine | |
| 2004 | WWE Hall of Fame 2004as Self | |
| 1999 | Heroes of Wrestlingas Greg "The Hammer" Valentine | |
| 1997 | WCW World War 3 1997as Greg "The Hammer" Valentine | |
| 1995 | AWF Warriors of Wrestlingas Greg "The Hammer" Valentine | |
| 1994 | WWE Royal Rumble 1994as Greg "The Hammer" Valentine | |
| 1993 | WWE Survivor Series 1993as The Blue Knight | |
| 1993 | Rawas Greg "The Hammer" Valentine | |
| 1992 | The Immortal Hulk Hoganas Greg Valentine | |
| 1992 | WCW Clash of The Champions XX: 20th Anniversaryas Greg "The Hammer" Valentine | |
| 1992 | WCW Beach Blastas Greg "The Hammer" Valentine | |
| 1992 | WCW WrestleWar 1992as Greg "The Hammer" Valentine | |
| 1992 | WWE SuperTape: Volume 5as Greg "The Hammer" Valentine | |
| 1992 | WWE Royal Rumble 1992as Greg "The Hammer" Valentine | |
| 1991 | WWE Rampage '91as Greg "The Hammer" Valentine | |
| 1991 | WWE SummerSlam 1991as Greg "The Hammer" Valentine | |
| 1991 | WWE WrestleFest '91as Greg "The Hammer" Valentine | |
| 1991 | WWE U.K. Rampage 1991as Greg "The Hammer" Valentine | |
| 1991 | WWE Mega Matchesas Greg "The Hammer" Valentine | |
| 1991 | WWE WrestleMania VIIas Greg "The Hammer" Valentine | |
| 1991 | WWE Superstars & Stripes Forever: The March to WrestleMania VIIas Greg "The Hammer" Valentine | |
| 1991 | WWE Funniest Momentsas Greg "The Hammer" Valentine | |
| 1991 | WWE Royal Rumble 1991as Greg "The Hammer" Valentine | |
| 1990 | WWE Survivor Series 1990as Greg "The Hammer" Valentine | |
| 1990 | WWE Hottest Matchesas Greg "The Hammer" Valentine | |
| 1990 | Battle of the WWE Superstarsas Greg Valentine | |
| 1990 | WWE SuperTape: Volume 2as Greg "The Hammer" Valentine | |
| 1990 | WWF/AJPW/NJPW Wrestling Summitas | |
| 1990 | WWE The Ultimate Challenge Special: The March to WrestleMania VIas Greg "The Hammer" Valentine | |
| 1990 | Wrestling Superheroesas Greg "The Hammer" Valentine | |
| 1990 | WWE Royal Rumble 1990as Greg "The Hammer" Valentine | |
| 1989 | WWE Survivor Series 1989as Greg "The Hammer" Valentine | |
| 1989 | WWE SummerSlam 1989as Greg Valentine | |
| 1989 | Fan Favoritesas Greg Valentine | |
| 1989 | The Best of the WWF: volume 20as Greg "The Hammer" Valentine | |
| 1989 | Demolition: Witness the Poweras Greg "The Hammer" Valentine | |
| 1989 | The Ultimate Warrioras Greg "The Hammer" Valentine | |
| 1989 | WWE Wrestling at The Meadowlands: May '89as Greg "The Hammer" Valentine | |
| 1989 | WWE Maple Leaf Wrestling: April '89as Greg "The Hammer" Valentine | |
| 1989 | WWE WrestleMania Vas Greg "The Hammer" Valentine | |
| 1989 | WWE Los Angeles Wrestling: January '89as Greg "The Hammer" Valentine | |
| 1989 | WWE Royal Rumble 1989as Greg "The Hammer" Valentine | |
| 1988 | WWE Los Angeles Wrestling: December '88as Greg "The Hammer" Valentine | |
| 1988 | WWE Survivor Series 1988as Greg "The Hammer" Valentine | |
| 1988 | Macho Madnessas Greg "The Hammer" Valentine | |
| 1988 | WWE U.K. Rampage 1988as Greg "The Hammer" Valentine | |
| 1988 | WWE Wrestling at The Meadowlands: September '88as Greg "The Hammer" Valentine | |
| 1988 | The Best of the WWF: volume 16 Around the Worldas Greg "The Hammer" Valentine | |
| 1988 | WWE Maple Leaf Wrestling: July '88as Greg "The Hammer" Valentine | |
| 1988 | WWE Maple Leaf Wrestling: April '88as Greg "The Hammer" Valentine | |
| 1988 | WWE WrestleMania IVas Greg "The Hammer" Valentine | |
| 1988 | Clash of the Championsas Greg "The Hammer" Valentine | |
| 1988 | Brutus "The Barber" Beefcakeas Greg "The Hammer" Valentine | |
| 1987 | The Best of the WWF: volume 14as Greg "The Hammer" Valentine | |
| 1987 | Wrestling's Most Embarrassing Momentsas Greg "The Hammer" Valentine | |
| 1987 | WWE Houston Wrestling: December '87as Greg "The Hammer" Valentine | |
| 1987 | WWE Survivor Series 1987as Greg Valentine | |
| 1987 | WWE Houston Wrestling: October '87as Greg "The Hammer" Valentine | |
| 1987 | WWE Maple Leaf Wrestling: June '87as Greg "The Hammer" Valentine | |
| 1987 | The Best of the WWF: volume 11as Greg "The Hammer" Valentine | |
| 1987 | WWE WrestleMania IIIas Greg "The Hammer" Valentine | |
| 1987 | The Best of the WWF: volume 10as Greg "The Hammer" Valentine | |
| 1987 | WWE Maple Leaf Wrestling: January '87as Greg "The Hammer" Valentine | |
| 1987 | WWE Wrestling at The Meadowlands: January '87as Greg "The Hammer" Valentine | |
| 1987 | Bob Uecker's Wacky World of Sportsas Greg "The Hammer" Valentine | |
| 1986 | Inside the Steel Cageas Greg "The Hammer" Valentine | |
| 1986 | WWE Houston Wrestling: October '86as Greg "The Hammer" Valentine | |
| 1986 | The Best of the WWF: volume 9as Greg "The Hammer" Valentine | |
| 1986 | The British Bulldogsas Greg Valentine | |
| 1986 | WWF Wrestling Challengeas Greg "The Hammer" Valentine | |
| 1986 | WWF Wrestling Challengeas Greg Valentine | |
| 1986 | WWF Superstarsas Greg "The Hammer" Valentine | |
| 1986 | WWE The Big Eventas Greg "The Hammer" Valentine | |
| 1986 | The Best of the WWF: volume 7as Greg "The Hammer" Valentine | |
| 1986 | Ricky "The Dragon" Steamboatas Greg "The Hammer" Valentine | |
| 1986 | WrestleMania IIas Greg "The Hammer" Valentine | |
| 1986 | WWE Grudge Matchas Greg "The Hammer" Valentine | |
| 1986 | Tag Team Championsas Greg Valentine | |
| 1986 | The Best of the WWF: volume 5as Greg "The Hammer" Valentine | |
| 1985 | The WWF's Amazing Managersas Greg 'The Hammer' Valentine | |
| 1985 | WWE Maple Leaf Wrestling: December '85as Greg "The Hammer" Valentine | |
| 1985 | WWE Maple Leaf Wrestling: October '85as Greg "The Hammer" Valentine | |
| 1985 | WWE Maple Leaf Wrestling: September '85as Greg "The Hammer" Valentine | |
| 1985 | The Best of the WWF: volume 4as Greg "The Hammer" Valentine | |
| 1985 | WWE Saturday Night's Main Eventas | |
| 1985 | WWE Saturday Night's Main Eventas Greg "The Hammer" Valentine | |
| 1985 | WWE Saturday Night's Main Eventas Greg Valentine | |
| 1985 | WWE Maple Leaf Wrestling: April '85as Greg "The Hammer" Valentine | |
| 1985 | WrestleManiaas Greg "The Hammer" Valentine | |
| 1985 | WWE Pay Per Viewas | |
| 1985 | WWF Hulkamania 1as Greg Valentine | |
| 1985 | Most Unusual Matchesas Greg "The Hammer" Valentine | |
| 1984 | WWE Maple Leaf Wrestling: October '84as Greg "The Hammer" Valentine | |
| 1984 | WWE Maple Leaf Wrestling: September '84as Greg "The Hammer" Valentine | |
| 1984 | WWE The Brawl to End it Allas Greg "The Hammer" Valentine | |
| 1984 | Tuesday Night Titansas Greg "The Hammer" Valentine | |
| 1984 | Tuesday Night Titansas Greg Valentine | |
| 1984 | NWA Boogie Jamas Greg Valentine | |
| 1983 | NWA Starrcade 1983as Greg "The Hammer" Valentine | |
| 1983 | WCW Arena Showsas Greg Valentine | |
| 1983 | NWA The Race to Starrcadeas Greg Valentine | |
| 1983 | NWA The Final Conflictas Greg Valentine | |
| 1982 | NWA Sam Muchnick Retirement Showas Greg Valentine | |
| 1981 | Mid-Atlantic Championship Wrestlingas Greg Valentine | |
| 1975 | WWF All-Star Wrestlingas Greg 'The Hammer' Valentine | |
| 1975 | WWF All-Star Wrestlingas Greg Valentine | |
| 1973 | WWE Old Schoolas Greg "The Hammer" Valentine | |
| 1973 | WWE Old Schoolas Greg Valentine |
