Wriath

A VERY mini boss, too weak to be considered even a mini-boss.

However, it's still quite a force.

Fairly high health, massive attack power, and extreme stealth abilities, it can stun plants, and jump over short plants like wall-nuts.

The stealth works when it's moving, it can only be shot at when noticed by a plant, each plant has a 20% chance of noticing every second it moves fast, however if moving slow it's only a 5% chance, when attacking it goes up to a 25% chance.

It can make a scream that stuns plants in front of it for a couple of seconds, has a 10 second recharge.

It also comes with a fairly small horde of zombies.

It can happen at any moment, but only 1 per round, and it's quite uncommon/rare, however more likely with instability.