Centrist

 is a Tier 4 Tank that upgrades from Spreadling and Heatseeker at level 45.

Design
The looks identical to the Spreadling, but its middle barrel is a bright red.

Technical
As indicated by its special color, the central bullet of the Centrist is homing.

Trivia

 * A centrist is a person who does not take a side on an issue, but in this tank's case the name is taken literally and the tank's center barrel is the one that receives a power-up when upgrading.