KANG MINHYUK - Father of Eun jung and Jiyeon, human and a famous kpop star

HAM EUN JUNG - Twin daughter of Soyeon and Minhyuk, she is older than Jiyeon in 5 minutes, she have a sister Qri and big brother Jungshin in humanland

                        - The water fairy , she love her family so much even she didnt know she is adopted

PARK JIYEON -  Twin sister of Eun jung, adopted by Taeyeon in devil land

                     - became bad when taeyeon give the red crystal

OH SEHUN - Big brother of Jiyeon , son of Taeyeon and Jonghyun

                   - Fell in love to Eun jung

LEE JONGHYUN -The next king in devil land when Kim Jongin or Kai died, she marry Taeyeon

JUNG YONGHWA -2nd couzin of Jiyeon and Sehun, fell in love to Qri

PARK HYOMIN - Bestfriend of Jiyeon , she love Sehun

                       - Hate Eun jung so much

LEE QRI - Youngest daughter of Park Gyuri and Lee Seong Yeol

LEE AHREUM - Bestfriend of Qri in Seoul University

RYU HWAYOUNG - Couzin of Jeon Boram , she is the one who care Soyeon and Taeyeon when boram died

                            - she help minhyuk in his career that's why minhyuk call her aunt

LEE JUNGSHIN - bigbrother of eun jung and qri , in love to jiyeon

KIM JUNGWOO -  the person who help hwayoung and nam gyuri(angel)

                        - profesor of seoul university

KIM BUM - the only  fairy who didnt killed by jessica, his mission is to look where is the twins

NAM GYURI - angel who sent from heaven to care and look at the fairy in humanland

WU YIFAN/KRIS- couzin of sehun and jiyeon, the baddest  in devil land, he is very greedy

HWANG TIFFANY, IM YOONA,

- THE HIGHEST DEVIL IN DEVIL LAND

CHOI SULLI,KWON YURI

- the highest angel in heaven

'THE FAIRIES'

PARK SOYEON - the water fairy but when she died she gave the blue crystal to eun jung.

KIM TAEYEON- the fire fairy but when she found jiyeon, she gave the red crystal to jiyeon

PARK CHANYEOL - the storm fairy, love IU

BYUN BAEKHYUN - rock fairy, when he died he gave the rock crystal to jungshin

GOO HARA- air fairy

LEE HYE RI - land fairy, have a crush on chanyeol

BANG MINAH - rain fairy

LEE JI EUN - animal fairy

BAE SUZY- nature fairy

JUNG KRYSTAL - forest fairy, she is the one who take good care to soyeon