Marilia is Surgeon's biological mother and childhood caretaker.
Marilia reveals that Surgeon and Zeca are both her sons. She raised Surgeon after he was adopted by her employers.
Surgeon and Zeca share Marilia as their mother.
Marilia tells Vera that Zeca and Surgeon are half-brothers and that both are her sons.
Surgeon was married to Gal, the identity Vera is forced to replicate.
The backstory states that Surgeon married Gal, whose burned appearance was later used as the model for Vera.
Surgeon abducts Vicente as punishment for the incident involving Norma.
After seeing Vicente leave the wedding on a motorbike, Surgeon tracks him down, kidnaps him, and holds him captive for six years.
Fulgencio works professionally with Surgeon before challenging his conduct.
Fulgencio is identified as one of Surgeon's colleagues and confronts him about falsified consent and human experimentation.
Explore the full interactive character relationship map of The Skin I Live In