Zim is a member of the alien Irken race and a former Irken Invader. However, since his actions usually lead to disaster (having nearly destroyed the Irken homeworld during Operation Impending Doom) his leaders, the Almighty Tallest, banished him to Foodcourtia. While there, however, Zim heard of Operation Impending Doom II, and - obviously not understanding the purpose of his previous exile - "quit being banished" and ventured to Conventia in the hope of getting an assignment. Chagrined, the Almighty Tallest sent him on a "secret mission" to Earth, in order to keep him occupied and away from the real Operation Impending Doom II. After arriving on Earth, Zim enrolled in the nearest elementary skool to begin his infiltration and gather information about the indigenous races. There, he became quick rivals with Dib Membrane. Zim's primary desire is to conquer Earth, mostly to prove his superiority and impress his leaders. However, he's extremely horrible at invading. The debate about him being a sympathetic villain is ambiguous because he is seen as evil due his "job" as an Invader, but has been mistreated and ridiculed by his species for almost his entire life, though he is oblivious to their hatred and considers his actions "good for the Empire", despite evidence to the contrary such as obliviously almost annihilating the entirety of Irken civilization (albeit by accident). He usually only causes chaos and destruction for either himself, his own race, or Earth. Despite all this, he occasionally shows some kindness towards certain individuals like Gir. While most Irkens are expected to be ruthlessly loyal to the Empire, Zim is considered overzealous even by their standards: Brash, arrogant, and overconfident, Zim's tendency to cause wanton destruction makes him a danger to himself and his own people, yet he still considers himself a mighty Irken warrior. In addition, he is acutely narcissistic and megalomaniacal, congratulating himself on even the smallest of successe
