The Young Guns

Yang En You

Chinese

Lighting up the Stars [M] - (angry biter that carries a spear)

Yoo Eun Mi

South Korean

Trot Lovers (FL's sister)

Park So Yi

South Korean

• The ATypical Family (ML's daughter)
• See You in My 19th Life (young FL in 19th Life)
• She Would Never Know (ML's niece)

Oh Ah Rin

South Korean

The Last Empress (young princess, emperor's kid from 1 night stand)

Gi So Yoo

South Korean

Unlock My Boss (CEO's daughter)

Kim Tae Yeon

South Korean

Missing: The Other Side Season 2 (youngest ghost @ village)

Kim Yoon Seol

South Korean

Castaway Diva (FL young)

Kim Do Eun

South Korean

Welcome to Samdalri - youngest daughter's daughter

Fu Bo Han

Chinese

Who rules the World (survivor of whole family massacre)

Han Chang Min

South Korean

Poong, The Joseon Psychiatrist (boy saved by Sr Dr in country, part of crew)

Ahn Ji Ho

South Korean

 Gyeongseong Creature (ML's employee) / Rebound [M] - (Energetic freshman) / Inseparable Bros [M] - (young quadriplegic boy) / Vanishing Time: A Boy Who Returned [M] - (-)

Choi Ro Woon

South Korean

Plus Nine Boys (actor played 9-year-old @ age 7) / Big (Hospital patient w/girl friend)

Park Sang Hoon

South Korean

Jung Shi Yool

South Korean

Once Upon a Small Town (he & little girl BFFs) / The King: Eternal Monarch (he was 4 yrs old & grew up w/8 yr old future king)

Jang Sun Yool

South Korean

Missing: The Other Side (kid missing his mom)

Kim Kang Hoon

South Korean

When the Camellia Blooms

Haru

Japanese

My Boyfriend in Orange (FL's younger bro)

Park Jae Joon

South Korean

Pachinko (FL's eldest son @ 7 years old)

Moon Woo Jin

South Korean

• The ATypical Family (classmate, crush on ML's daughter)
• Castaway Diva (ML young)

Hong Dong Young

South Korean

The Matchmakers (Crown Prince)

Seo Woo Jin

South Korean

The Midnight Studio (a little boy ghost)

Kurokawa Souya

Japanese

Teasing Master Takagi-san - ML

Mi Ke

Chinese

Warm Hug (Young ML)