LEO MACKELLENE was born in 1980 in Fortaleza, State of Ceará and is a musician and a college professor.

He is the author of O livro das sombras [The Book of Shadows] and O livro dos mais pequenos silêncios [The Book of the Smallest Silences] (2006) and has contributed his short stories to the Caos portátil [Portable Chaos] almanac and Encontros e desencontros [Encounters and Missed Encounters] anthology, among other publications.

Leo is the editor-in-chief of the scientific magazines, books, and academic manuals published by Luciano Feijão University in Sobral, Ceará.