Factorial

 is a Tier 5 Tank that upgrades from Multiplier and Gondola at level 60.

Design
The looks similar to the Multiplier, but its barrels are changed to have the same positioning and proportions as Gondola's. It can also be described as a Gondola that gains Multiplier's barrel colors.

Technical
The has the same mechanics as Multiplier, being able to spawn two types of sunchip separated by color. Sunchips of a certain color will infect Squares into more sunchips of their color which can potentially lead to an imbalance.