This article is incomplete.
Jet Set Tornado
While testing the Tornado's new speed booster, Sonic and Tails encountered a a variant of the normal Balkiry that had stolen some supplies from the Resistance. They were able to destroy the badnik, at the cost of the speed booster.
The Balkirys look similar to their normal counterparts, but were coloured green.
Basically, the Balkiry is a mindless and silent drone programmed to follow its leader's every command. As such, when left without a leader to follow, it become directionless and only able to cause harm by accident. Under a guiding force however, it is a cold and merciless machine that carries out their commands without question.
The Stealth Balkirys are faster than the normal versions.