Lee Seung-chul (이승철) is a South Korean singer, known as a vocalist of rock band Boohwal.  He is known in Japan as RIU.

Filmography

• Men's Life These Days: Groom's Class
• The Legend, The New Singer — Judge
• 내 이름은 캐디
• Problem Child in House
• 폼나게 가자, 내멋대로
• The Delicious Guys
• The Producers — Theme Song Performance
• 2009More Than Blue — Singer A
• Super Rookie — Chairman Maruyama
• 2005The Freaking Family — Son
• 1992The Moon Is... the Sun's Dream — Moo-hoon

Appearances as themselves (13)

• The Scout — Self - Mentor
• The Seasons — Self
• Hurrah for Independence — Self
• CAP-TEEN — Self - Judge
• Show!terview with Jessi — Self
• Stars' Top Recipe at Fun-Staurant — Himself
• The Quack Philosophers — Self - Host
• Amazing Saturday — Self
• Let's Eat Dinner Together — Self
• Chef & My Fridge — Self
• Superstar K — Self - Judge
• You Hee-yeol's Sketchbook — Self
• Family Outing — Self