• Full name: Choi Yeawon
  • Date of Birth: June 18, 1999
  • Nationality: Korean
  • Blood type: O
  • Group: Oh My Girl, Oh My Banhana
  • Agency: WM Entertainment
  • Debut: 2015
  • Position in the group: sub vocalist, main dancer
  • Family members: Mom, dad, younger brother, Arin
  • Nickname: ‘chick Arin’, ‘baby rin’, ‘choi arin’
  • She is left handed and loves pink
  • Arin is the new MC of ‘Music Bank’