Plays the role of Seo Sumin's father in the drama (Drama name: 66, Kim Taehyung (rarely used), Manager Kim (used most often)). Well... to put it simply, he wears glasses. Takes good care of Sumin. In his 50s.

Plays the role of Lee Nayeon's father in the drama (Drama name: Park Jincheol). Has a slightly chubby build (not extremely fat). Takes good care of Sumin. In his 40s.

Plays the role of Seong Taehoon's father in the drama (I don't know the real name of the actor playing Taehoon...) (Drama name: Seong Hansu). Wears glasses just like Manager Kim (sometimes he doesn't). Takes good care of Sumin. {In the drama, he is a Taekwondo master/director?} In his 40s.

Plays a thug in the drama, but {in reality, he is gentle and cute [according to the creator]} (Drama name: Gold Teeth). Has a neat hairstyle. Takes good care of Sumin. In his 40s.

Plays a special agent from the Special Tasks Bureau (blah blah...) in the drama (Drama name/Nickname: Mole Cricket). I forgot what he looks like. Takes good care of Sumin. Age unknown.

Plays an iljin-style character in the drama, but is actually kind (Drama name: Joo Haeri). Has somewhat blonde hair. Close with Sumin. In her 20s.

Plays the Chairman of Joohak Construction and Joo Haeri's father in the drama (Drama name: Joo Kangchan). Neat hairstyle!! Takes good care of Sumin. Age unknown.

Plays a Special Tasks Bureau agent in the drama (Drama name: Jeong Sanga). Shoulder-length hair. Takes good care of Sumin (Helps Manager Kim in the drama). In her 30s.

Plays the daughter of Park Jincheol (Yoon Kyungho) in the drama (Drama name: Park Dabin). Going through puberty in the drama. Close with Sumin. Around 19?

Plays the delinquent son in the drama (I don't know his real name... T.T). Plays Seong Hansu's son. Delinquent son character. Close with Sumin (according to the creator). Age unknown.