The Rat King

The Rat King is the secondary antagonist of struggling. He appears at Cave VII - A Song Of Acid and Bones in the cave chapter.

Description
The Rat King is an obese, lazy rat with a purple crown on his head. He has puffy cheeks and wears a purple cape. He has a rat army that he is "building at this very moment" He is seen at the last sub area in the cave, in which he triggers an acid flood, which causes him to die, while troy makes it to safety only to be blown to the middle of nowhere. He could also be seen in the his highness' nest area in the mechanical bone crushers area.

Roles
While he may not be there, there is an army of rats that can be seen in the vents of the Laboratory. The rats chase troy, only for troy to block them and make it to the waste disposal wing. He then appears for the first time in "A song of acid and bones", where he triggers an acid flood and then die in the process.

Trivia

 * It says on his trading card that he is "building an army at this very moment" and is a monarch of all trash rodents.