The Borg are potentially the most memorable villains of any sci-fi show, with their skin-crawling assimilation, and heartless annihilation of life throughout the universe. Akin to the Daleks of Doctor Who, they remain one of the primary antagonists of the Star Trek universe, appearing in The Next Generation, Voyager, briefly in Deep Space 9, and most recently Picard. While continuing their terrifying consumption of living matter throughout their portrayals, their representation has evolved over time, giving more and more depth to the "race."