Kim Na Ra, the Warrior Aerona

Lee Howon's lover

Kim Sunggyu's younger sister

Strongest among all Aeronas

Possesses all four bending elements - air, water, fire and earth

Lee Howon, the Healer

Kim Na Ra's lover

Jang Dongwoo's best friend

Possesses two bending elements - Water and Fire

Kim Sunggyu, the Healer

Kim Na Ra's older brother

Possesses two bending elements - Fire and Earth

Jang Dongwoo, the Healer

Lee Howon's best friend

Possesses two bnding elements - Water and Air

Cha Eun Woo, the Upper-Class Warlock

Strongest of all Warlocks

Once Kim Na Ra's best friend

Moon Bin, identity unknown

Park Minhyuk, identity unknown

The Elders, Governer of Realms

Creators of competition

Capable of removing powers and vanquishing residents of either realms

Full of knowledge but not all-knowing

Sight surpasses normal capability