Ken (켄) is a Korean Pop singer. He is a main vocalist of the group VIXX.
- Stage Name: Ken (켄)
- Real Name: Lee Jae Hwan (이재환)
- Nickname:Ken Chopper
- Birthdate: April 6, 1992
- Hometown: Seoul (Jayang-dong)
- Family: Parents, 2 Older Brothers
- Height: 180cm
- Weight: 65kg
- Blood Type: AB
- Position: Main Vocal
- Hobbies: Drawing, watching and studying gag shows, beatbox, and dancing to other groups’ songs
- Education: Baekseok Arts University (Practical Music)
-  Lu Yu - The Fourth Dimension Love
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