The Bit Tank is an experimental treaded-tank operated by Romy. The tank's weapons are four thin machine guns called "Vulkans" [sic] and a middle laser called "St. Elmo's Fire". All five weapons are each connected to heavy cables and can be moved independently from one another to lock onto multiple enemies at once. Although convenient, controlling them has a high degree of difficulty.
- Bit Tank: The original. The Bit Tank stops at the closest enemy, and the Vulkans continuously lock onto them. Once there's no one in the vicinity, the tank continues forward. St. Elmo's Fire drags a laser back and forth, and enemies hit by it have their element resistance reduced.
- Special Bit Tank: Painted bright green. St. Elmo's Fire can also home onto enemy units. Alongside its enemy resistance reduction, the Special Bit Tank can self-heal and generate a attack-reduction barrier whenever it activates the Vulkans.
- The name "Bit Tank" comes from Romy's sprite files; it is never named in game.
- The Special Bit Tank's Quartet Vulkans are referred to as "Quartet Vulcans" in its unit description and "Quartette Machine Guns" as its 4 title.