The Martians, sometimes called "the Yip-Yips", are interplanetary visitors, presumed to be from the planet Mars, who are terrified by things like clocks, telephones and computers on Sesame Street. They rarely come face-to-face with other characters on the show.
A squad of MIB agents handle organized crime in the hub city of Miami, a top 10 city alien. Agents in this city use the Nato Phonetic Alphabet for code names and include both human and disguised alien agents in the squad.
