SAC_2045* lacks specific identification or detailed development. While information exists on the Tachikoma units collectively across the *Ghost in the Shell* franchise—covering their design, evolving AI, roles in *Stand Alone Complex* and *2nd GIG*, and established personality variations—no sources single out a unit designated "Tachikoma 2" in *SAC_2045*. References to distinct personalities in earlier series (such as a hyperactive unit favored by Batou, a logical unit, a slower unit, and an intellectual unit) are noted, alongside confirmation of the Tachikomas' return in *SAC_2045* and related merchandise. However, "Tachikoma 2" remains undifferentiated within this specific series' context.