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• Stage name: Jae I (제이)
• Real name: Im HaHyeong (임하형)
• Birthday: 93.08.06
• Position: Leader, Vocal & Dance
• Height: 180 cm
• Hobby: Drinking coffee
• Specialty: Dance
• Nickname: Charming Guy
• He was born in Gwangju.
• Jaei's favorite color is red.
• When he was in middle and high school the instructors at his academy suggested that he enters dance battles, and every time he did, he won a prize.
• Can play guitar.
• Jaei started out as a backup dancer when he was 19 years old (used to be a BTS backup dancer). As he watched the singers on stage he started to want to be a singer. Since he was over 20 it didn't go so well but the CEO of DNA Entertainment recognized his passion and talent and he became a member of Great Guys.
• Jaei is really confident in dancing and he doesn't think anybody can beat him at it. He's been dancing since he was in 2nd grade.
• Jaei knows Hyungwon and Minhyuk of Monsta X, since they went to same dance school
• During free time, Jaei watches at least one movie a day.
• Jaei's favorite mangas are Naruto and One Piece.
• He likes the color red.
• He prefers the sea over the mountains.
• Jaei has an older brother and a younger brother.
• When asked to say one good and one bad point about the member sitting next to them Donghwi said Jaei is good at dancing but sleeps too much.
• Jaei's favorite mangas are 'Naruto' and 'One Piece'.