- Stage Name: Haeun (하은)
- Birth Name: Yoon Ha Eun (윤하은)
- Position: Main Rapper, Main Dancer, Vocalist, Maknae
- Birthday: March 12th, 1999
- Zodiac Sign: Pisces
- Height: 164 cm (5’5″)
- Weight: 46 kg (101 lbs)
- Blood Type: –
– Haeun auditioned for “The Unit” but she didn’t pass the auditions.
– Her specialties are popping and musical jump rope.
– She is former member of Apple.B.