I have no idea what 'Crazy Legs' Hirsch real name is?
Elroy -- but he claimed he no longer responded to that name, since everybody called him "Legs"
Trivia: He tried acting for awhile, and played a convict in the film Unchained
(which gave the world the song "Unchained Melody") and as a pilot in Zero Hour
, the film parodied by Airplane
-- he plays the Peter Graves role, getting food poisoning and even showing a kid around the cockpit!