El Rey, eterno monarca

Lee Min-ho

Lee Gon

Kim Go-eun

Jung Tae-eul / Luna

우도환

Jo Eun-sup / Jo-young

Kim Kyung-nam

Kang Shin-jae

정은채

Goo Seo-ryung / Goo Eun-ah

이정진

Lee Rim

전무송

Lee Jong-in / Prince Boo-young

김영옥

Noh Ok-nam

전배수

Jung Do-in

서정연

Song Jung-hye

박원상

Park Moon-shik

박소진

Jo Hae-in

백현주

Lee Gon's Secretary

강홍석

Jang Michael / Jang Mi-reuk

김용지

Myung Na-ri / Myung Seung-ah

이홍내

Seok Ho-pil

안시하

Kim Hee-joo

최우성

Kim Ki-won