As of , , there have been 21 individual Grand Slam Champions. Sixteen wrestlers have only achieved it once, seven under the original format and nine under the modern format, while five wrestlers have achieved the Grand Slam under both formats, three of whom automatically became modern Grand Slam champions at the introduction of the modern format (with the same titles they won while becoming original Grand Slam champions), and two who became modern Grand Slam champions after the modern format was introduced (with different titles won to complete both formats).