As a junior club, it was founded on the principle that any boy, no matter how good or bad a rugby player he was, would get a game.

In 1975, Sunnybank expanded from being solely a junior club, to being one with more senior players, with the introduction of an Under 19s side in that year.

In 2005, the Sunnybank First Grade team defeated the Gold Coast Breakers in the Hospital's Cup Grand Final, to claim the club's first senior top division championship.

This performance was repeated in 2007, when once again the Dragons defeated the Breakers in the Premier Grade Grand Final at Ballymore, the spiritual home of Queensland Rugby.

The 2007 season got off to a steady start with wingers Liam Bibo and Karel Bos impressing as with fullback and captain John Dart, towards the end the development of young fly-half Ben Lucas and the return of QLD Reds player Digby Ioanie, Rodney Blake, Greg Holmes, Henari Veratau and Nic Berry saw the Dragons develop impressive form in the lead up to the finals, culminating in an impressive 85–19 Grand Final victory over the Gold Coast, with Ben Lucas hauling a personal tally of 35 points.