The X-Files Extra is a crossword puzzle that includes four solutions: ALIEN (5 letters), FED (3 letters), AGENT (5 letters), and GMAN (4 letters). ALIEN refers to the extraterrestrial beings that are the focus of the popular science fiction television show The X-Files. FED stands for Federal Bureau of Investigation, the government agency that employs the two main characters in the show. AGENT is a reference to the two FBI agents, Fox Mulder and Dana Scully, who investigate paranormal activity. GMAN is an abbreviation for Government Man, a nickname given to Mulder by his colleagues.