- Stage Name: Kai (카이)
- Real Name: Kim Jong In (김종인)
- Nick Name: Kkamjong
- Birthdate: January 14, 1994
- Height: 182cm
- Bloodtype: A
- Skills: Dance (ballet, jazz, hip hop, popping, rocking)
- He was cast into SM Entertainment after winning the company's Youth Best Contest in 2007.
- He was inspired to be a singer when he saw legendary group Shinhwa perform on TV. He asked his dad what kind of dance they were dancing and he replied “That’s a performer’s dance”. From then on he began to pursue the career as a performer.
- It has been said that the EXO members cannot help but get bossed around by him when it comes to dancing, and only Taemin can control him.