Holographic Overlooker in 2410.
The Overlookers were rotund humanoid lifeforms, a sophont species from the galaxy's Delta Quadrant. They were members, and appeared in charge of, the Hierarchy interstellar nation-state. (VOY episode: "Tinker, Tenor, Doctor, Spy")
History[]
The Hierarchy made first contact with the United Federation of Planets in 2376 when they encountered the Intrepid-class starship USS Voyager. Using their advanced surveillance technology, they believed the Doctor's Emergency Command Hologram was genuine. (VOY episode: "Tinker, Tenor, Doctor, Spy")
Voyager later allied with an Overlooker ship to escape the entrapment of the Void. (VOY episode: "The Void")
In 2410, the Alpha Quadrant Alliance, of which the Federation was a part, established permanent contact with the Hierarchy. The Doctor, working undercover, helped AQA representatives to bring the Hierarchy into the fledgling Delta Alliance, a defensive pact against the resurgent, genocidal Vaadwaur Supremacy. An Overlooker science/intelligence officer applied to join the crew of an AQA vessel. (STO - Delta Rising mission: "Alliances")
Alternate timelines[]
In an alternate timeline where Voyager remained in the Delta Quadrant and spurred the formation of the Delta Coalition in the 2370s, rescued Overlooker officers joined the Delta Coalition in their defense against the Undine threat, known as "the Scourge". (VOY - Myriad Universes - Infinity's Prism novella: Places of Exile)
In a simulated timeline where Voyager was prevented from reviving the Vaadwaur in the 2370s, the Iconian Empire turned the Overlookers into a servitor race. After providing them with advanced technology, an enigmatic Hierarchy waged a campaign of terror across the quadrant, and the AQA was unable to form the Delta Alliance to counter. (STO - The Iconian War mission: "Butterfly")
External links[]
Overlooker article at Memory Alpha, the wiki for canon Star Trek. Overlooker article at The Star Trek Online Wiki.