Kenxdavid commented...

Kim Heechul calls himself that XD, and also half of SUJU used to call him that!

commented...

Dong-hae - Pinocchio, 동해바다 Donghae Bada (Bada means Sea)
Siwon - Simba
Yesung - Cloud (구룸), Dog (from the Zodiac), Rabid Dog (광견)
Kangin - Kang Kings (강깅쓰), Kkang (깡), Neoguri (너구리), Ox (from the Zodiac), Youngchoon (영춘)
Shindong - Dongri Dong Dong

Jiyoung commented...

Heechul is called cinderella