Nicolas Herraras or just Nick Herraras, he has dyed hair purple and his bangs are dyed blue, he has brown eyes, wears a surgeon's suit. Nick is a doctor of general surgery/ immunology, he treats and diagnoses diseases associated with impaired functioning of the abdominal cavity and retroperitoneal space, and also specializes in the treatment of diseases associated with impaired functioning of the immune system. He is quite serious, cold and reasonable during his work. 