Jimmie Dale is a fictional character created by Frank L. Packard in 1917. He was a wealthy playboy by day, but at night put on a costume and became The Grey Seal, who enters businesses or homes and cracks safes, always leaving a dianond ……shaped, grey paper “seal” behind to mark his conquest, but never taking anything. He was just doing it for “the sheer deviltry of it” at first, but when a woman catches him she blackmails him to war on certain crime organizations.