John Wisniski Jr.

Person

John Wisniski Jr.

Acting 75 September 20, 1951

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, whic…

IMDb

Known for

Popular titles

Raw

Raw

6.8 1993 TV Show
All Elite Wrestling: Dynamite

All Elite Wrestling: Dynamite

7.9 2019 TV Show
WWF Superstars

WWF Superstars

7.2 1986 TV Show
Undertaker: The Last Ride

Undertaker: The Last Ride

7.4 2020 TV Show
WWF Wrestling Challenge

WWF Wrestling Challenge

6.8 1986 TV Show
WWE Saturday Night's Main Event

WWE Saturday Night's Main Event

8.3 1985 TV Show
WWF All-Star Wrestling

WWF All-Star Wrestling

1975 TV Show
WWE Old School

WWE Old School

1973 TV Show
Biography: WWE Legends

Biography: WWE Legends

7.4 2021 TV Show
Mid-Atlantic Championship Wrestling

Mid-Atlantic Championship Wrestling

1981 TV Show
Clash of the Champions

Clash of the Champions

1988 TV Show
Tuesday Night Titans

Tuesday Night Titans

9.0 1984 TV Show

Biography

A closer look

Read full 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

Movies and shows, newest first

  1. 2025
    Midnight Massacre

    Movie Caepio

  2. 2021
    Biography: WWE Legends

    TV show Greg "The Hammer" Valentine

  3. 2021
    WWE's Most Wanted Treasures

    TV show Greg "The Hammer" Valentine

  4. 2020
    Chris Jericho's 30th Anniversary Celebration

    Movie Greg "The Hammer" Valentine

  5. 2020
    Undertaker: The Last Ride

    TV show Greg Valentine (archive footage)

  6. 2019
    All Elite Wrestling: Dynamite

    TV show Greg Valentine

  7. 2019
    350 Days

    Movie Self

  8. 2019
    Headstrong

    Movie Self

  9. 2016
    WWE: The U.S. Championship: A Legacy of Greatness

    Movie Greg 'The Hammer' Valentine (archive footage)

  10. 2015
    Behind the Ropes: The Greatest Fraternity in the World

    Movie Himself

  11. 2015
    At What Cost? Anatomy of Professional Wrestling

    Movie Himself

  12. 2014
    WWE: 150 Best Pay-Per-View Matches, Vol 1

    Movie Himself

  13. 2012
    WWE: Starrcade - The Essential Collection

    Movie Himself

  14. 2011
    JCW Legends and Icons

    Movie

  15. 2011
    Timeline The History of WWE – 1985 – As Told By Greg Valentine

    Movie Himself

  16. 2008
    WWE: The History Of The Intercontinental Championship

    Movie Himself

More credits
  1. 2006
    WWE: The History Of The WWE Championship

    Movie

  2. 2005
    The Greatest Wrestling Stars of the '80s

    Movie Self

  3. 2005
    World Wrestling Legends: 6:05 - The Reunion

    Movie Greg Valentine

  4. 2004
    WWE Hall of Fame 2004

    Movie Self

  5. 1999
    Heroes of Wrestling

    Movie Greg "The Hammer" Valentine

  6. 1997
    WCW World War 3 1997

    Movie Greg "The Hammer" Valentine

  7. 1995
    AWF Warriors of Wrestling

    TV show Greg "The Hammer" Valentine

  8. 1994
    WWE Royal Rumble 1994

    Movie Greg "The Hammer" Valentine

  9. 1993
    WWE Survivor Series 1993

    Movie The Blue Knight

  10. 1993
    Raw

    TV show Greg "The Hammer" Valentine

  11. 1992
    The Immortal Hulk Hogan

    Movie Greg Valentine

  12. 1992
    WCW Clash of The Champions XX: 20th Anniversary

    Movie Greg "The Hammer" Valentine

  13. 1992
    WCW Beach Blast

    Movie Greg "The Hammer" Valentine

  14. 1992
    WCW WrestleWar 1992

    Movie Greg "The Hammer" Valentine

  15. 1992
    WWE SuperTape: Volume 5

    Movie Greg "The Hammer" Valentine

  16. 1992
    WWE Royal Rumble 1992

    Movie Greg "The Hammer" Valentine

  17. 1991
    WWE Rampage '91

    Movie Greg "The Hammer" Valentine

  18. 1991
    WWE SummerSlam 1991

    Movie Greg "The Hammer" Valentine

  19. 1991
    WWE WrestleFest '91

    Movie Greg "The Hammer" Valentine

  20. 1991
    WWE U.K. Rampage 1991

    Movie Greg "The Hammer" Valentine

  21. 1991
    WWE Mega Matches

    Movie Greg "The Hammer" Valentine

  22. 1991
    WWE WrestleMania VII

    Movie Greg "The Hammer" Valentine

  23. 1991
    WWE Superstars & Stripes Forever: The March to WrestleMania VII

    Movie Greg "The Hammer" Valentine

  24. 1991
    WWE Funniest Moments

    Movie Greg "The Hammer" Valentine