Clone Name Generator

Clones start life with a number and earn a name. In Star Wars, every clone trooper is issued a designation like CT-7567 by the Kaminoans, but the names that stick (Rex, Fives, Echo, Hardcase, Crosshair) come from brothers in the barracks. That is the key to a convincing clone name: it should sound like a nickname somebody gave a soldier, not a name a parent chose. Fives got his name from the repeated digits in CT-5555; Echo repeated orders back; Hevy carried the heavy repeater; Cutup was the squad joker; Droidbait kept getting shot.

So the pattern is short, English-sounding, one or two syllables, usually a plain word: a weapon (Blaster, Trigger), a habit (Chatterbox, Slick), a piece of gear (Scope, Wrench), a physical trait (Scar, Shorty, Ink), a specialty (Doc, Sparks, Deadeye), or a number pulled from the designation (Niner, Nines, Ninety-Nine). Commanders keep the same style (Cody, Wolffe, Bly, Bacara, Fox), which is part of what makes the clone army feel like one family. Republic Commandos and ARC troopers lean a little harder (Boss, Scorch, Sev, Fordo, Alpha).

The same logic works for any cloned character in original sci-fi: give the clone a cold factory designation, then let the people around them supply something warmer. The tension between the number and the nickname is the whole story.