Name: Fox William Mulder
Date of Birth: October 13, 1961
Residence: Formerly Washington, D.C, now unknown
Family: Mulder grew up believing that his parents were William and Teema Mulder, both deceased. He has a sister, Samantha Ann Mulder who was abducted when he was 12. It was revealed that C.G.B. Spender (Cigarette-Smoking Man) was his biological father and therefore he has a half-brother, Jeffrey Spender. Mulder also has a son, William, thought to be created from his own DNA. The child was adopted to another family.