Star Trek TNG episode clip when Picard was initially transformed to Locutus, model depicted this stage of Borg assimilation. As Borg conquered additional civilizations and integrated captured technologies, their abilities to assimilate populace increased dramatically, especially with usage of nan-probes to molecularly altered body functions. Official History of the Borg - grove.ufl.edu/~locutus/Bit/history.html

Inset 1 : Picard/Locutus clip with a targeting laser appended to his head, there was still more Picard than Locutus at this stage given his human fleshtone. As Borg added additional hardware in successive stages, Locutus medium grey fleshtone will emerge. Borg images - www.startrekdb.se/multimedia/bilder/bilder.php

Rollover : Close-up of Borg cube, its rudimentary layout alludes to its spartan yet efficient functional state. This Borg cube design is considered to be 2nd generation and was not the version shown in Locutus episodes. Borg Cube - memory-alpha.org/en/wiki/Borg_cube

Borg are prominently showcased in Star Trek episodes in The Next Generation, Voyager, and Enterprise. In each of these episodes, different Borg vessels were introduced, be it heavily-armed Cube, scout-ship Sphere, small rectangular Probe. Borg starships - en.wikipedia.org/wiki/Borg_cube

• Borg Ship Classes - www.ex-astris-scientia.org/schematics/borg_ships.htm

Inset 2 : In the first Star Trek Borg episode was when omnipotent entity "Q" hurled Picard's USS Enterprise into Borg-dominated space. In that episode, Borg procreated in normal human fashion via giving birth to siblings. These siblings immediately began their hardware integration process in multiple stages. Evidently, it was this forced encountered that the Borg knew of Federation and Earth's existence (hence new source for technology assimilation). Borg - www.memory-alpha.org/en/index.php/Borg

After they captured Federation nano-technology at Word 359 battle, Borg no longer procreated via normal birth, but rather transformed captured populace into Borg drones via nanoprobe injections. Photo inset shows initial Borg drone with its monotone greyish fleshtone and rudimentary hardware layout. Borg Sounds and Video clips - www.startrek-voyager.info/dl_borg.html

Inset 3 : Borg are pseudo-race of cybernetic beings from Galactic Universe's Delta Quadrant. Since they are linked via hive minded Borg collective consciousness, no single individuality exist. Although hierarchy still exist with a Borg Queen disseminating orders to subordinate drones. Borg Queen - memory-alpha.org/en/wiki/Borg_Queen

Borg's sole purpose for existence is forcible assimilation of technology and knowledge to further their conception of perfection. They enslave captured populace by transforming them into mindless automatons via assimilation process, hence most feared in Star Trek's Alpha and Delta Quadrants. Delta Quadrant - memory-alpha.org/en/wiki/Delta_Quadrant

• Galactic quadrant - en.wikipedia.org/wiki/Delta_Quadrant

Besides, Locutus, the other famous Borg (besides Borg Queen) in Star Trek universe is Seven of Nine of Tertiary Adjunct of Unimatrix Zero-One (shortened to Seven of Nine) in Star Trek Voyager series. Seven of Nine - memory-alpha.org/en/wiki/Seven_of_Nine

• Seven of Nine - www.startrek.com/startrek/view/series/VOY/character/1112406.html

• Seven of Nine - en.wikipedia.org/wiki/Seven_of_Nine