Crabtree produced the next boom in British wrestling by creating the legend of Big Daddy, the alter ego of Shirley, who had been unemployed for the best part of 6 years before joining Joint in 1972 as the heel "Battling Guardsman" and then being rebranded as Big Daddy two years later. After an initial transition period as a heel/tweener in the mid-1970s (most notable for his tag team partnership with future arch-rival Giant Haystacks and a heel vs heel feud with legendary masked wrestler Kendo Nagasaki, whom Daddy unmasked during a 1975 televised bout), from the summer of 1977 onwards, Big Daddy became a larger-than-life fan favourite of children and pensioners alike. That he was no longer a bodybuilder youth, rather an overweight man in his forties, did not seem to be an obstacle as every major heel in the country was defeated by Daddy, usually in short order thanks to Crabtree's lack of conditioning.