Nick Bockwinkel
Some of Gagne's biggest feuds were against Gene Kiniski, Dr. Bill Miller (under a mask both as Dr. X and then Mr. M), Fritz Von Erich, Dr. X, The Crusher, Ray Stevens, Mad Dog Vachon, Larry Hennig and Nick Bockwinkel while champion and title changes. He always wrestled as a face and utilized the sleeper hold as his finisher. His longest reign as champion was for 7 years, from August 31, 1968, to November 8, 1975, dropping the title to Nick Bockwinkel. He would regain the title from Bockwinkel on July 18, 1980 and drop it back to Bockwinkel on May 19, 1981.