Farmer

Farmer is a TESTBED tank that has been seen some times (if you're looking for the boss see here).

Design
Farmer is a Smotherer with Hybrid drones.

Technical
If the Farmer was a public tank, then it would be a Tier 6 tank becuse it has a Smotherer front barrel and Basebrid drones.

Upgrades
Currently, nobody knows from which TESTBED tank it upgrades.

As the Farmer
Utilize the Basebrid drones to get rid of people coming from behind.

Against the Farmer
Maybe use tanks like Hotliner. Honestly I don't know anything about this...

Trivia
This and Uzi are only TESTBED tanks that have a Reanimated Boss variant.