For other uses, see Leviathan.

Leviathan was an enormous machine entity or sentient starship which collected sentient lifeforms and placed them in a zoo in its interior. It was encountered by the USS Voyager in the Delta Quadrant. Among the races it collected were a group of Jem'Hadar who were not dependent on Ketracel White, and were presumably taken prior to the Jem'Hadar's enslavement by the Dominion. In addition a tribe of Vidiians that were abducted prior to the Vidiian Phage.

Leviathan attempted to collect Voyager, along with other Delta Quadrant species. After escaping, the Voyager crew discovered a record in Leviathan's computer banks of Willard Decker and Ilia merging with V'Ger, suggesting that Leviathan is somehow related to V'Ger. It is possible that Leviathan was a member of the same machine race as V'Ger. (VOY comic: "Leviathan")

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