Diablo Cody, self-named (she's really Brook Busey) screenwriter of Juno, singlehandedly helped popularize not just her heroine's name and her own but all o-ending names for girls. You don't need us to tell you that it takes a brave parent, in every way, to name a baby Diablo. Diablo is one of the Spanish baby names that diverges furthest from the well-paved camino.

The infamous name Dracula technically means "son of Dracul" but since Dracul means devil in modern Romanian, we thought we'd cut right to the chase.

The Spanish word for "devil" makes for a very daring baby name, but in the era of babies names Hades, Azrael, Loki and even Lucifer, it feels like a plausible possibility. Indeed, 5 baby boys were named Diablo in 1975 – the only year the name has made the US extended list for either sex.