 In the outfit, Lansky was considered the "brains", while Siegel was the "brawn".Siegel, the youngest of the gang, was known around his neighborhood as ; a Yiddish word meaning "untamed" or "animal".He had a reputation for having a short-temper and people described him as being "crazier than a bedbug," which gave him the nickname "Bugsy" that he came to hate.