Valentín Oliva (born 23 January 1998), professionally known as Wos (stylized in all caps), is an Argentine singer, actor, and freestyler.

[1] He also won the FMS Argentina and the international tournament Red Bull Batalla de Gallos, both in 2018.

[4] After announcing his retirement from freestyle competitions, he released in 2018 his first single "Púrpura" followed by "Andrómeda", both under the label Agencia Picante with production from LOUTA and Nico Cotto.

[9] On 21 May 2020, he released the EP Tres puntos suspensivos, recorded during the quarantines due to the COVID-19 pandemic is composed of four songs including one with his brother, Manuel.

[12] Also in 2020, he made appearances in the comedy webseries Almost Happy and the music docuseries BREAK IT ALL: The History of Rock in Latin America, both from Netflix.