Rat King

Overview
The Rat King is a special encounter during the Animal Invasion event. The only units available are Ramsey and Mr. Purrface. The Rat King is accompanied by 5 Mangy Rats.

This fight has a lot to do with luck. Ramsey's Vulcan Cannon attacks all the rats at once, but their high defense/security makes for few hits and some misses/dodges. The lengthy cooldown on his gun means Mr. Purrface takes over for a few rounds, doing very little damage. The rats' low cooldown usually removes Ramsey from the fight, leaving only Mr. Purrface and her high defense, which translates into numerous dodges or misses for the rats.

There's no real penalty for losing the fight, and the rewards from the battle are a bunch of Teeth.