List of Fictional Assimilating Races - in TV Drama

In TV Drama

• The Borg are a race of cyborgs in the Star Trek universe. They are known within and beyond Star Trek fandom for their relentless pursuit of what they want to assimilate, their rapid adaptability to almost any defense, and their ability to continue functioning after what may seem a devastating or even fatal blow seemingly unaffected. As such, the Borg have become a powerful symbol in popular culture for any juggernaut against which "resistance is futile".
• Neural parasite or "blue gill" from the Star Trek universe. Parasitic being which tried to infiltrate Starfleet by physically connecting with brains of high-ranking admirals within the organization (From TNG episode "Conspiracy").
• The Cybermen, a cyborganic race introduced in 1966 in the TV series Doctor Who. They take suitable human subjects and supplement or replace organic parts. Unlike the Borg, each Cyberman is an individual, but devoid of emotion or loyalty to their former life, with no chance for "reversion" to their original state.
• Kobali from the Star Trek universe. They reproduce by reanimating the dead of other species and converting them into Kobali.
• Also in Doctor Who, the episode School Reunion features the Krillitanes, bat-like creatures who absorb characteristics from other species which they have conquered.
• Stargate SG-1's Goa'uld, a race of parasites that enter the bodies of their hosts whom they then control, and Replicators, a mechanical race that absorbs technology and annihilates entire galaxies for resources.
• In Stargate Atlantis, the Wraith are a vampiric hive-based species that harvest the 'life-force' of other humanoid beings for nourishment.
• Brain Slugs from Futurama
• The orange glowing alien entities in Invasion
• Xenocytes from Ben 10: Alien Force
• The Invaders from Getter Robo: Armageddon, a race of extraterrestrial Invaders which have the power to possess humans, mutating them into hideous creatures, as well as survive even if reduced to tiny pieces. They can also assume any shape they want, as they are amorphous in nature. Their most distinctive features are their many eyeballs and protruding spikes.
• The Black Oil or Purity from The X-Files which is a sentient virus which infects humans and uses their body to grow a new life-form or alternatively can simply take control of the infected person