The no-nonsense General Martian is next in the character parade. Antagonist to Monkey and leader of the Martian Army, his sole purpose in life is to defend the Martian people. This involves stopping Monkey at something for some reason. It may be best left unsaid.
Some may recall near the end of the early 2010s run of Damn It, Monkey!, General Martian ended up killing himself. That entire run of Damn It, Monkey! never happened and isn't canonical for you nerds that care about that stuff. So drop it.