Tachikoma units appear across *Ghost in the Shell* media, including *Stand Alone Complex*, *2nd GIG*, *Solid State Society*, and *SAC_2045*. These AI-driven spider-tanks share a collective consciousness through nightly synchronization, yet develop distinct personalities over time. Individual units exhibit unique traits: one displays hyperactive behavior favored by Batou, another demonstrates heightened logic, and a third engages more slowly in philosophical discussions. In *SAC_2045*, the Tachikomas collectively assist Togusa by luring pursuers. They also undertake independent actions, such as earning money at a brothel to repair a damaged unit, maintaining their characteristic childlike curiosity and capacity for autonomous action. Official media does not reference a distinct unit identified as "Tachikoma 3" with a unique background, development, or narrative arc. The Tachikomas operate as a networked collective where individuality emerges without numbered distinctions.