Heat terror

The heat terror is a simple yet extremely powerful bloon technology piece stolen by the monkeys, it fires a massive specially crafted "heat" round that upon impact forces molten metal through armor, macerating the insides of things it comes into contact with, holding a massive barrel it can hurl it at amazing speeds and distances.

It was designed to punch through armored monkeys and decimate the electronics inside with the hull it's protected by. It's amazing at doing this job, which is why the monkeys use it exactly for the same thing (exept for the part about punching through monkeys) It proved capable of tearing through ground vehicles and air-ships alike, didn't matter if it was coated in rubber of steel.

The Heat terror as it's known is a dangerous weapon, hits quite hard, can go through AD quite well and hits from an amazing distance.

However it suffers from two major drawback2, it has a VERY limited angle of aiming, making it useful to plant on the end of a long strip of track. It also has a limited magazine, it holds 4 shells until it has to take a 1.5 second reload.

The complex bloon technology make complex and diverse upgrades difficult, however a set of simple yet effective improvements can be done.

Shots are capable of 50 damage a hit and can punch through 3 AD

Upgrades
Machined barrel: The hand-made barrel is replaced with a machine worked one, the better quality increases the effective range.

Heavy rounds: The material for the shells are swapped out for a denser one, increasing the damage by 20%

Improved capacity: Larger magazines mean the Heat terror can hold 6 rounds instead of 4.

Better training: A better trained crew mean the effective range is slightly increased and magazines can be swapped out in 1 second.