Nadia Santos

Nadia Santos
Alias character
Mía Maestro as Nadia Santos
First appearance	"Blood Ties" (episode 3.20)
Last appearance	"All the Time in the World" (episode 5.17)
Portrayed by	Mía Maestro
Information
Aliases	Evergreen
Gender	Female
Occupation	SIDE (Argentina) field agent APO field agent
Significant other(s)	Eric Weiss (former boyfriend)
Relatives	Arvin Sloane (father, deceased) Irina Derevko (mother, deceased) Emily Sloane (step-mother, deceased) Jack Bristow (step-father, deceased) Jacqueline Sloane (paternal half-sister, deceased) Sydney Bristow (maternal half-sister) Elena Derevko (aunt, deceased) Katya Derevko (aunt) Isabelle Vaughn (niece) Jack Vaughn (nephew) Michael Vaughn (brother-in-law)
Nationality	Russian

Nadia Santos is a fictional character in the television series Alias, and a main character during the series' fourth season. She is played by Mía Maestro.

Introduced near the end of the third season, Nadia is the daughter resulting from an affair between Irina Derevko and Arvin Sloane. She is the half-sister of Sydney Bristow and Jacqueline Sloane (Arvin's daughter with his wife, Emily). According to Irina's sister Katya, Nadia was born in a Soviet prison and taken away from Irina the day after her birth. Identified by the Soviets as "The Passenger", a being with a "direct conduit" to Milo Rambaldi, Nadia spent the first few years of her life as the subject of experimentation, including injection with a "Rambaldi fluid" which triggered her connection to Rambaldi.

According to Elena Derevko (speaking in her guise as Sophia Vargas), Michael Vaughn's father Bill kidnapped Nadia from Soviet custody and left her with Vargas. Regardless of the circumstances of her arrival, Nadia grew up in an orphanage in Argentina under the direction of Elena/Sophia. After being attacked by a man in the orphanage one night, Nadia ran away and spent her teen years on the streets, committing some 130 criminal acts including assault and petty theft. At the age of 17 or 18 she was captured by police. Roberto Fox, an Argentine intelligence operative, was impressed by her skill and recruited her into a branch of Argentina's intelligence service (SIDE). She spent the next few years being trained as a spy. Eventually, she became romantically involved with Fox.

In reality, Fox was a rogue agent operating for his own interests and not those of Argentina, a fact Nadia learned during a mission to obtain secret documents during which a close friend and colleague was killed. Nadia learned the documents were in fact from the Argentine government. For this betrayal, she shot and killed Roberto Fox upon her return from the mission, however (for reasons not explained) the blame for his murder fell upon César Martinez, a fellow operative who, like Nadia, had been recruited from the streets. She continued working in Argentine intelligence after this event, while Martinez became a freelancer, using the equity of his supposed kill to establish a reputation with criminal organizations.