Magister Coronach

Korwak is the captain of the Plumbers Academy. He appeared in The Enemy of My Enemy. He is shown to take great pride of his cadets and was not willing for them to be in the line of fire as they are not ready for it and they are rookies. He also did not want his academy to be turn into a war zone considering it only a place of learning and is very stern about Ben bringing Argit to the academy and luring Kevin Levin as he spoke to him in his office. He assisted Ben to help stop Kevin and he also knows what goes on in the academy as he knew Argit had assaulted two of his cadets and appears quite knowledgeable about Argit's 14 warrants for his arrest so in the end he ordered the Vreedle Brothers to lock him up.

Ben 10: Ultimate Alien

 * The Enemy of My Enemy

Trivia

 * Korwak is very similar to the Plumber from Ultimate Aggregor except that he has more wrinkles, lighter green skin and hair.
 * Korwak's name is based on the hair style name Mohawk.
 * Korwak knows Max Tennyson and has great respect for him.