The Archon was a 22nd century Federation starship operated by Starfleet. In 2167, the Archon disappeared while investigating the planet Beta III. The fate of the Archon would remain a mystery for a hundred years, until the USS Enterprise visited Beta III in 2267, and learned that the sentient computer Landru had destroyed the ship, and had murdered or absorbed her crew. The Archon's visit became an apocryphal tale to the Beta III natives, who mixed it in with their quasi-worship of Landru; her crew became known as the Archons. (TOS: "The Return of the Archons" )