K-drama’s male lead characters often stand out as romantic heroes, winning hearts with their charisma, handsome looks, and idealized persona of the perfect boyfriend. Yet, not all of them are flawless. Numerous K-dramas feature male leads who exhibit red-flag behaviors, adding complexity and depth to the storytelling.

Here are five of these red-flag male lead characters that are sure to leave you frustrated.

Park Jae-eon from “Nevertheless”

Park Jae-eon from “Nevertheless” is a notorious red flag. He's really good at attracting people with his charm, but he struggles with sticking to one person and doesn't like getting too close emotionally. He's a playboy with commitment issues who prefers casual relationships.

Gu Jun-pyo from “Boys Over Flowers”

Gu Jun-pyo, the popular male lead in the hit series “Boys Over Flowers,” is a rich bully who takes everything and everyone for granted. His relentless bickering and bullying of the female lead, forcing her to obey his every demand, makes him a major red flag.

Choi Do-il from “Little Women”

Choi Do-il from “Little Women” is involved with money laundering. He is solely driven by greed and is perceived as someone who would betray others without hesitation for money. Despite his eventual redemption, his past makes him a walking red flag.

Baek Hee-sung from “Flower of Evil”

Do Hyun-soo from “Flower of Evil” hides his dark past by living as Baek Hee-sung. His wife, a detective, begins to suspect that he could be a serial killer. He presents himself as a devoted family man, manipulating his family members to uphold this image.

Lee Tae-oh from “The World of the Married”

Lee Tae-oh, in “The World of the Married,” is a husband and a father who took his loving wife for granted and cheated on her with a younger woman. He went to the extent of enlisting the help of their mutual friends to hide his affairs from his wife.

Who do you think is the flagbearer of red-flag male lead characters in K-dramas?