Alvar Soren Vacker

Alvar is the oldest sibling of Fitz and Biana. He is a vanisher like his mother Della. Alvar has dark wavy hair and a square jaw like Alden and pale cobalt blue eyes like Della; he is very conscientious of his appearance. He doesn't live with the family anymore and seems to work for the council. In Keeper of the Lost Cities book 1, he was working to keep peace with the ogres, who were getting angry about the smoke from the fires in the Forbidden Cities. He is aloof in his personality and is a ladies man, juggling three girlfriends, much to Della's horror and Keefe's amusement.

Neverseen
Alvar is revealed to have been part of the Neverseen. He has been a spy for them, and has been passing along information from his father, Alden. Alvar believes that Fitz is his father's favorite son, and that he has to live up to the "Golden Boy."

It was also revealed that Alvar was in fact 'The Boy Who Disappeared', seen by Sophie during her childhood. During this time Alvar was being sent by Alden to search for the moonlark (Sophie) in the Forbidden Cities.