Zayne is described as a mature, responsible, and strong-willed character who is also known for his quiet, introspective nature and a sweet, caring heart beneath a seemingly aloof exterior. He is highly skilled and intelligent, often intimidating others, but he also displays a gentle and protective side, especially towards the MC and his patients. Zayne's personality is characterized by his loyalty, dedication, and a strong sense of responsibility, often prioritizing the well-being of others.