Infirmity

 is a Tier 5 Tank that upgrades from Trapling and Twin Contagion at level 60.

Design
The greatly resembles the Trapling, but it has a short Contagion-like barrel emerging from its central Trapper. The rest of the tank looks identical to Trapling.

Trivia

 * This tank was an idea by CreepyDaPolyplanet.
 * Despite using a modified Contagion as its main weapon, this tank cannot be obtained through Contagion's branch.
 * Infirmity is a state of weakness.