There are multiple artists performing under the name Kasper. 1) A South Korean rapper and YouTuber. 2) A drum & bass producer and DJ from Minneapolis, USA. 3) A American rapper from Mississippi, USA. 1. Serine Lee, commonly known as Kasper (hangul: 캐스퍼, stylized K∆SPER) is a South Korean rapper and YouTuber. She used to be a member of rap group Play the Siren. In January of 2017, she made her long-awaited official debut as a solo artist under DSP Entertainment with the song Lean On Me. Read more on