Khun Chai Puttipat

• Jirayu Tangsrisuk as M.R., M.D. Puttipat Juthathep / Khun Chai Pat / Khun Chai Mohr (Thai: หมอ, romanized: Mohr, lit. 'Doctor')

The Neurosurgeon at the public hospital, the first son of M.C. Witchakorn with Mom Yok, a daughter of the Chinese magnate. He is calm, clever, quiet, scrupulous and has no interest about love. He is so popular for the patients and nurses at his workplace because of his good-look and smart body.

• Ranee Campen as Krongkaew Boonmee / Kaew

A diligent, grateful, innocent and beautiful person who was born in a poor family and lives with her father by themselves. She works hard to raise money for her father's surgery for a brain tumor and was persuaded to enter the Miss Siam contest for winning the prize. But she never knew that the winner will be Sir Pinij's harem.

• Chotika Wongwilas as M.L. Marathee Taewaprom

She is a snobbery, self-centered and stubborn person. She desperately wanted to be Juthathep's in-law, because she was growing up with being told from her father that she would be Juthathep's in-law in the future. So she does everything for try to get an interest from M.R. Puttipat, also being nurse and works at the same hospital with him. She never helps paying family's expenses and uses her salary for herself.

• Montri Jane-aksorn as Sir Pinij

He is an influential and flirtatious person. He loves to lead the girls, who come from Miss Siam contest, to be his harem but he already has Khun Ying Dara as the principal wife. He tries everything to get Krongkaew as his pander.

• Warintorn Panhakarn as M.R. Taratorn Juthathep / Khun Chai Yai
• Ranida Techasit as M.L. Raweeramphai Sawasward / Maprang
• Thanavat Vatthanaputi as M.R. Rawornruj / Khun Chai Ruj
• Nittha Jirayungyurn as Wanrasa Juthathep Na Ayutthaya / Rasa
• Tanin Manoonsilp as M.R. Rachanon Juthathep / Khun Chai Lek
• James Ma as M.R. Ronapee Juthathep / Khun Chai Pee
• Jaruwan Panyopas as Mom Aiet Juthathep Na Ayutthaya
• Duangta Tungkamanee as Grandma Oon

• Dilok Thongwattana as M.R. Taewapan Taewaprom / Khun Chai Taewapan
• Nutwara Vongvasana as Mrs. Kedsara / Khun Ked

She is the wife of Chinnakorn, and now living in the bridal house. She also helps Krongkaew from the pursuit of Sir Pinij.

• Esther Supreeleela as M.L. Wilairampa Taewaprom / Khun Rampa

• Krailas Kriangkrai as Kitti

The father of Krongkaew and he is not healthy because of the brain tumor.

• Suriyont Arunwattanakoon as Chinnakorn

Kedsara's husband and he help Krongkaew from the pursuit of Sir Pinij, along with his wife, at M.R. Puttipat's request.

• Narisa Promsupa as Yam

M.L. Kedsara's servant and helper.

• Jirayu Tantrakul as M.D. Yodsavin

The Gastroenterologists who is hilarious, has a sense of humor and a gentleman. He has a crush on Krongkaew but never exposes his true feeling.

• Naruemol Phongsupharp as Nurse Piengporn

• Suangsuda Lawanprasert as Khun Ying Dara

Sir Pinij's principal wife. She is calm and courteous but she actually hurts everytime when her husband brings back harem to their home.

• Nahatai Pichitra as Aing-orn

The person in charge of finding the contestants for beauty pageant but, actually, she is a madam who leads the contestants for being Sir Pinij's pander. And she is Baibua's rival.

• Deejai Deedeedee as Baibua

She is a madam who find the women for being Sir Pinij's pander and she is Aing-orn's rival.

• Nattira Jivaramonaikool as Sunan

The daughter of Aing-orn. She is snobbery and overbearing but later become Sir Pinij's pander.

• Patthanapol Kunchon Na Ayutthaya as Krairerk

The son of Aing-orn and the older brother of Sunan. He is flirtatious person and used to bully Krongkaew when she lived in Aing-orn's house.

• Pawanrat Naksuriya as Mali

The staff at Miss Siam contest who tell the truth of Sir Pinij's to Krongkaew.

• Aekkarin Areerat as Sombun

Juthathep palace's servant and chauffeur.

• Natthanee Sitthisaman as Somsri

Mom Aiet's servant.

• Thiparin Yodthanasawas as Jaew

Juthathep palace's servant.

• Thanakorn Posayanont as M.R., Maj.Gen. Anupan Taewaprom / Khun Chai Anupan

The younger brother of M.R. Taewapan, the husband of Mom Daraneenuch and the father of M.L. Sineenuch Taewaprom. And he is the stepfather of M.L., Flg.Off. Chatchavee Taewaprom.

• Mayurin Pongpudpan as M.R. Daraneenuch Taewaprom / Khun Ying Daraneenuch

The wife of M.R. Anupan and the mother of M.L. Sineenuch Taewaprom.

• Jaron Sorat as M.L., Flg.Off. Chatchavee Taewaprom

M.R. Ronapee's friend and the stepson of M.R. Anupan.

• Settha Sirachaya as The Magnate Song

The Chinese magnate who is the father of Mom Yok and the grandfather of M.R. Puttipat and M.R. Rachanon. He is the owner of Yokfah Department Store.

• Prissana Klampinij as Teacher Bussaba

The teacher of Krongkaew who suggesting her to enter a beauty pageant Miss Siam.

• Patsachol Supree as Silvy

M.R. Puttipat's friend in the college years.

• Wut Kongkaket as Choom

Caretaker of Juthathep family's vacation home.

• Napaporn Hongsakul as Nuan

Caretaker of Juthathep family's vacation home.

• Sutheesak Pakdeetaewa as Sir Krirk
• Wasant Uttamayotin as Cha-moi

An MC in Sir Kirk's birthday party.