Kevin Schubert (87 games) - 1948-49 Kangaroo hooker who joined Manly in 1950. Captained our 1951 Grand Final loss to the Vermin. Retired in 1956, passed away in 2007 at age 79.
Fred Jones (241 games) - Captained us to our first two premierships in 1972 and 1973. Also a NSW and World Cup hooker. On the video I have of the '72 and '73 Grand Finals, Zorba (who introduced the games) called him the "Robert Redford of rugby league". Retired in 1975.
Max Krilich (215 games) - Played in 2 winning Grand Finals, captaining the 1978 side before going on the 1978 Kangaroo Tour. Spent over 100 games in reserve grade until Jones retired but went on to captain NSW and Australia including the 1982 Kangaroo Tour. Forced to retire in 1983 with a neck injury
Mal Cochrane (118 games) - 1987 premiership hooker was unlucky not to tour with the 1986 Kangaroos after winning that years Rothmans Medal (selectors took Benny Elias as Royce Symmons backup). Handy goal kicker too. Indigenous Team of the Century hooker. Retired in 1990.
Jim Serdaris (80 games for Manly) - Kangaroo hooker and 1996 premiership player. Retired in 1999 but returned for one season in France with the Pia XIII in 2002.
Michael Monaghan (95 games for Manly) - Converted halfback who used those skills to become a creative dummy half. Captained us in our Grand Final loss to the cheating Scum in 2007. Left Manly after that year and joined Warrington. Retired in 2014.
Matt Ballin (195 games and counting) - Dual premiership hooker and Queensland Origin player. Not the greatest dummy half runner mostly thanks to his lack of pace, but a great distributor from dummy half and will tackle the house down game after game.
Honourable mentions to Matt Dunford, David O'Donnell and Chad Randall.
I've left Tooves off the list because I class him as a halfback. Des too, though he wasn't anything special at hooker.