Xiao Zhan: aka Wei Ying/Wei Wuxian/ Sean
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Wang Yibo: aka Light Eyed Boy/Man, Lan Zhan (Boss)
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Yang Yang as Officer Adrian, (Vice)
Special Homicide Detective.
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Dr. Wang Huan
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Dr. Xiao XingChen
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Dr. Xue Yang
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Jiang Cheng aka JC
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Kim Jae Wook as Chief of Homicide,
Ryan Gold (Chief)
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Kim So Hyun as Officer Jun
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Nam Joo Hyuk as Officer Sean
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Kim Min Jae as Officer Drew
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Lee Joon-gi as Dr. Li Ruan Suk
Chief of Forensic Team

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Note: There are many more characters, I shall add them as the story progresses.