Source

The Puppets' Bunker

Description

Summon your 2B automaton minion. For when you need the company of a compact version of an advanced combat android dressed in a distinctive subculture style.

Journal

Recovered from deep within the Puppets' Bunker, this diminutive automaton bears a resemblance to the android known as YoRHa No.2 Type B. Why such a thing was created and by whom, however, are questions that will likely remain unanswered.

Tooltip

So there're androids, which are machines, but also other machines, and also...
   - Dig Site Chief