Luiz Eduardo de Oliveira (born December 13, 1944),[1] more famous under his pen name Léo is a Brazilian comics creator.

After graduating as a mechanical engineer, Oliveira left Brazil because of the then military dictatorship.

He worked as an illustrator in the advertising industry in São Paulo before once more leaving Brazil, this time for France, in 1981.

In 1986, with the assistance of Jean-Claude Forest, Oliveira began contributing to the youth oriented magazines of Bayard Presse.

In 1993, Oliveira finally achieved a dream when Dargaud agreed to publish his first solo (writer-artist) series: Aldébaran.