2BR-NTB, more commonly called 2B, functioned as an astromech droid of the BB-series. This droid served the Resistance spy Norath Kev. Kev was accompanied by 2B on a mission to the planet Varkana. While there, the bounty hunter Ax Tagrin, an agent of the First Order, discovered Kev. Tagrin, after shooting 2B, successfully captured Kev. This droid was easily identifiable due to its unique red and green paint job, and its sensors were specifically calibrated to detect approaching hazards.
The initial appearance of 2BR-NTB occurred in "The Missing Agent," specifically episode twelve of Star Wars Resistance's second season. This animated TV show episode was broadcast on December 22, 2019. While the dialogue in the episode referred to the droid as "2B," the complete designation, 2BR-NTB, was given in its official Databank entry on StarWars.com. Stephanie Carey created the droid's concept art by modifying an existing model known as "BB8A," which served as the model for BB-8 in Star Wars Resistance, with alterations to the head and its color scheme.