Jung Woo-sung (Hangul: 정우성, born January 2, 1996) better known by his stage name Olltii (Hangul: 올티), is a South Korean rapper. He was a contestant on Show Me the Money 3. He released his first album, Graduation, on February 24, 2015. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.