Buster Keaton
Buster Keaton started performing on stage when he was still in diapers. His parents called him “the boy who could not be damaged,” and the show involved his father throwing him around the theatre. Authorities frequently tried to charge his parents with child endangerment, but the Keatons were usually long gone by then.
It turns out, Keaton could be damaged—he was just unbelievably tough. Famously breaking his neck during a take that made it into his film Sherlock Jr., Buster Keaton claimed that by the end of his career he’d “broken every bone in his body”.