John Wisniski Jr.
Birthday: 1951-09-20 | Place of Birth: Seattle, Washington, USAJohn 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.
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Known For
Acting
Year
Title
Role
2025
Midnight Massacre
as Caepio
2015
2004
WWE Hall of Fame 2004
as Self
1992
WWE SuperTape: Volume 5
as Greg "The Hammer" Valentine
1991
WWE Superstars & Stripes Forever: The March to WrestleMania VII
as Greg "The Hammer" Valentine
1991
WWE Mega Matches
as Greg "The Hammer" Valentine
