Prince William (TV series)

• KunDa Hsieh 謝坤達 as Yi Wei Lian 易威廉 / Liu Wen Bin 劉文彬

Liu Wen Bin 劉文彬 - He is called Ah Bin by everyone. A poor fishmonger that lives with his widowed mother in the small seaside fishing village of Mei. He leads a peaceful and carefree life until his home that has been in his family for three generations is up for demolition by Yi Shan Constructions to build a new seaside resort call Bella Villa. In order to save his home he agrees to assume the identity of William the unstable CEO of Yi Shan Constructions. But things get complicated when he falls in love with William's sister Yi Xin and starts to rebel on William's mentor Wan because his conscience gets the better of him.

Yi Wei Lian 易威廉 - He is referred to as William. The cold and ruthless rich CEO of Yi Shan Constructions. He recently took over his deceased father's company but has panic attacks due to the pressures of being an inexperience CEO. A kidnapping orchestrated by his own mother and one of her boyfriends when he was young has left him traumatized for the rest of his childhood and left him with mental issues. Unable to trust anyone he puts on a cold persona when dealing with people. After another kidnapping orchestrated by his chauffeur he is left over traumatized and unable to function.

• Andrea Chen 陳匡怡 as Yi Xin 易欣

William's younger sister who just graduated from college and works as an independent journalist. She writes for her own blog called Liberté. She does not agree with how William runs Yi Shan Constructions and constantly argues with him about evicting people and demolishing their homes. Ah Bin falls in love with her at first sight and sometimes forgets that Xin is William's sister. Unlike other rich girls she is not into makeup, jewelry or clothing. When she finds out about Ah Bin she starts to know him and fall for him after seeing his caring and big heart for others.

• An Wei Ling 安唯綾 as Zhao Kai Di 趙凱蒂

She is referred to as Katy by everyone. Zhao Da Hai's daughter. Yi Xin's former classmate who she does not get along with. She has been in love with William since they were young, which her father does not understand since he finds William annoying. She works at Yi Shan Constructions as her father's assistant, Song's assistant. She spreads rumors about her and William who was really Ah Bin to gossip reporters in order to try to cement her status as William's girlfriend.

• Ku Pao-ming as Wan Yong Chang 萬永昌

William's father former trusted assistant. He was tasked by William's late father to mentor and protect William. In order to hide William's mental illness and protect his image he blackmails Ah Bin with his home at stake into assuming William's identity while William recovers in secrecy. In order to fulfill his former boss's dying wish he neglects his daughter and ailing wife's wish to retire and be with the family more.

• Paul Hsu 許騰方 as Ma Ka Long 馬卡隆

William's personal assistant. He was with William during his kidnapping at Mei Village and is the only other person besides Wan that knows of Ah Bin assuming William's identity. In order to maintain his job he constantly keeps tabs on Ah Bin to make sure he won't do anything out of the ordinary. He becomes friends with Ah Bin who has become a kinder and friendlier boss to him than the real William ever was.

• Zhu De Gang 朱德剛 as Zhao Da Hai 趙大海

General Manager at Yi Shan Constructions and Katy's father. Feeling disrespected by William he works together with reporter Fang Yun Hao to sabotage William and makes sure his first major project as the CEO fails. He often uses history figures and war leaders during his speeches to William to intimidate him.

• Jason Zou 鄒承恩 as Fang Yun Hao 方允浩

A well known journalist. He works together with Zhao Da Hai to try to sabotage William. When he gets hold of information about Ah Bin he investigate Ah Bin's connection with William and tries to uncover the truth between them.

• Pan Li Li 潘麗麗 as Lai Yu Xia 賴玉霞

Ah Bin's loving and caring widowed mother. She is saddened and suspicious when her son who has never cared for big city life suddenly leaves their fishing village to take a job in Taipei, but little does she know that he is only doing so to protect their home.

• Xu Hao Xiang 徐灝翔 as Assistant Song 宋祕書

Zhao Da Hai's trusted assistant. His boss's daughter Katy works as his assistant.

• Zhang You Ming 張佑鳴 as Ke Sang 柯桑

A fellow village residence at Mei Village that are friends with Ah Bin and his mother.

• Gou Feng 勾峰 as Yi Ming Shan 易明山

William and Xin's deceased father. He died recently due to cancer leaving William to take over his company. His dying wish to Wan is for him to protect and mentor William.

• Liao Yi Qiao 廖苡喬 as Xiao Tong 小瞳

Yi Xin's friend.

• Yao Kun Jun 姚坤君 as Psychiatrist 心理醫生

A psychiatrist that is treating William's mental illness.

• Xia He Xi 夏和熙 as Hairstylist 髮型師

The stylist that Wan hires to give Ah Bin a makeover in order to look like William.

• Wang Xi Hua 王希華 as Director Wang 王部長

Works at Yi Shan Constructions. He is in charge of the budget for each construction project.

• Huang Wan Bo 黃萬伯 as Police officer Lin 小林

The police officer that was in charge of Ah Bin's kidnapping case. According to himself he has gone through professional training.

• Ray Yu 尉庭愷 as young William Yi 小威廉

He was a normal child until his own mother together with her boyfriend who she plans on running away with orchestrate a kidnapping plan to extort money with William's life.

• Gina Lin 林利霏 as Wan Xiao Qing 萬小晴

Wan Yong Chang's grown daughter. She goes to Yi Shan Constructions headquarters demanding her father retire before its too late due to her ailing mother who is suffers from dementia.

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