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An assimilated Bolian
Seven of Nine, an assimilated Human
An assimilated Ktarian
An assimilated Klingon
Members of the following species have been assimilated by the Borg Collective. Some species, such as the Kazon, have been deemed unworthy of assimilation.
By designation 
Edit
By name Edit
By appearance Edit
- Axum's species (VOY: "Unimatrix Zero", "Unimatrix Zero, Part II")
- Bajoran (VOY: "Survival Instinct")
- Bolian (Star Trek: First Contact)
- Brunali (VOY: "Collective")
- Cardassian (Star Trek: First Contact)
- Hirogen (VOY: "Unimatrix Zero, Parts "I" & "II")
- Human/Humanoid (TNG: "Q Who", et al.)
- Kelis' species (VOY: "Unimatrix Zero, Parts I" & "II")
- Klingon (Star Trek: First Contact, VOY: "Unimatrix Zero, Parts I" & "II")
- Ktarian (VOY: "Dark Frontier")
- Norcadian (VOY: "Collective")
- Peliar Zel native (VOY: "Infinite Regress")
- Rasiinian (VOY: "Infinite Regress")
- Reptohumanoid (VOY: "Infinite Regress")
- Romulan (VOY: "Unity")
- Reptilian aliens (VOY: "Infinite Regress")
- Swarm species (VOY: "Infinite Regress")
- Tailheads (VOY: "Infinite Regress")
- Tarkalean (ENT: "Regeneration")
- Vidiian (VOY: "Infinite Regress")
- Voth (VOY: "Infinite Regress")
- Vulcan (VOY: "Unimatrix Zero, Parts I" & "II")
- Wysanti (VOY: "Collective")
- Varn's species (VOY: "Unimatrix Zero")
By reference Edit
- Caatati (VOY: "Day of Honor")
- El-Aurian (TNG: "The Best of Both Worlds")
- Farn (VOY: "Unity")
- Ferengi (VOY: "Infinite Regress")
- Hazari (VOY: "Think Tank")
- Krenim (VOY: "Infinite Regress")
- Parein (VOY: "Unity")
- Sakari (VOY: "Blood Fever")
- Talaxian (VOY: "The Raven", "Mortal Coil")
- Terrelian (VOY: "Infinite Regress")
