Appurtenance

 is a Tier 4 Tank that upgrades from Equalizer at level 45.

Design
The looks similar to the Single, but it has a the same barrel as Spawner on the back of it.

Technical
Like other Sidekick Tanks, the 's spawner spawns a singular Single minion. This minion is fully controllable. Being a Single branch, the tank can also zoom using altfire, but this also causes the minion to repel.

Trivia

 * This is the only Sidekick Tank that is Tier 4. All other ones are Tier 5.
 * This is the only tank to spawn controllable minions that can also zoom.