Masterbrain

Located in Vault-Tec Headquarters, Masterbrain is a unique Robobrain owned by Vault-tec that can be shut down via 3 terminals scattered around the area,which deactivates all other robots in Vault-Tec headquarters as well. It has been confirmed that it does attack on sight. It is also the only known robobrain in the entire game without a visible brain. Its brain may be armor plated, or alternatively, may be entirely cybernetic.