Baratack, also called Bara-tan, is a member of Robot Girls Team T. Her design originates from the combining mecha Barattack in the Superhuman Squadron Barattack series.

Bara-tan boasts a notably spoiled personality and possesses a powerful sweet tooth. She consistently avoids missions and assigned tasks, showing far less initiative than her teammates. This shared aversion to effort fuels a rivalry with Team Z's Gre-chan.

Within *Robot Girls Z ONLINE*, Bara-tan undergoes the "Team T Legend Plan" upgrade. This grants her specialized forms for diverse environments: Blue Bara-tan, Green Bara-tan, Black Bara-tan, and Space Bara-tan, enhancing her capabilities in each setting.

Her character portrayal remains consistent across media. She appears in the web manga and the *Robot Girls Z* anime shorts, participating in Team T's sports festival challenge against Team Z. Later, she collaborates with other Robot Girls teams to confront threats like the Great General of Darkness-ko. Available materials focus solely on these traits and upgrades.