Zim

Invader Zim, or more simply known as Zim, is the titular main antagonist of the franchise of the same name. He is an Irken serving the Irken Empire, but due to his incompetence, he was banished to Earth, under the guise of being sent to conquer it.

He is the main villain of the Zim Arc, and briefly appeared in the Ice Prince Arc as the final obstacle. He is currently stuck inside the snowy mountain as an ice cube.

He is voiced by Richard Steven Horvitz.

Past
Zim is one of the many Irkens born on the planet Irk. At some point in his early life, he killed two of the Tallest, the Irkens' rulers by accident. It is unknown how this happened.

However, despite this, he was also assigned to be a part of Operation Impending Doom, the Irkens' first attempt at conquering the rest of the universe. The plan was quickly abandoned, however, as Zim began destroying Irk with a massive machine, unaware of the damage he was causing.

This little mishap caused him to lose his status as an Invader, and be banished to the planet of Foodcourtia as a fast food worker, seemingly forever.

A few days later, however, he "quits being banished" and heads back to the Tallest, as they are about to launch Operation Impending Doom II. The Tallest, knowing of Zim's destructive abilities, decide to send him to Earth to get rid of him for good.

Before being sent to Earth, he is assigned to come there along with a robot made out of literal trash, who is nicknamed GIR by the Tallest. He quickly becomes Zim's partner, and the two head off to Earth in a spaceship.

When they get there, they wear disguises to fool the Earth into believing that they are both regular people. However, Dib, a human boy, quickly recognizes what he's playing at, and Dib becomes Zim's greatest enemy. At some point, they meet an Irken girl named Tak who attempts to take over Zim's mission, but Zim and Dib quickly stop her.

Invader Zim: Enter the Florpus
According to show runner Jhonen Vasquez, each episode of the show is an alternate timeline, so it can't be sure which is the 'prime' timeline. This Zim is from the timeline that plays out in the movie Invader Zim: Enter the Florpus.

Zim constructs a plan to make Dib paranoid by hiding inside his toilet for an incredibly long period of time, which works, surprisingly. This causes Dib to become weak and overweight, as Zim reports to the Tallest how Phase 1 of his plan to conquer Earth is complete.

However, he quickly realizes that he does not have a Phase 2. It doesn't help that he finds out that the Tallest aren't coming to Earth at all - So he becomes depressed and does not carry out Phase 2. When Dib comes to expose him to the world after losing weight, he accidentally reveals his father's newest experiment - The Membracelets, which bring Zim back into the game.

On Peace Day, Zim kidnaps Professor Membrane, Dib's father, to a space prison known as Moo-Ping 10, disguising himself as a scientist and using the bracelets to transport Earth to the Irken Empire's flight path. This inadvertently causes a black hole known as a Florpus Hole to appear, which will eventually consume the Earth and merge it with alternate realities. Zim pays no mind to this.

After a few days, Zim is celebrating his victory as Earth's residents flee in terror. As he holds the key to the Membracelets' planet-warping power, Minimoose, Dib chases after him for it, but Zim is able to escape.. Up until he gets knocked in the head with a ham, and is knocked out.

This does not stop the Florpus from consuming the Earth, however. As the Florpus merges Earth with several alternate realities, Professor Membrane, recently rescued from space prison, manages to use Minimoose to transport Earth back to it's original position, right before the Tallest are consumed by the Florpus Hole as well.

In the Knitterverse
Zim is later sent into the Knitterverse along with GIR, but is met with a not-so-warm welcome as he is immediately attacked by a puppet version of Dib. He quickly realizes something strange about the Dib he is fighting, and flees to the old castle, which he completely remakes in his image and turns into his own base of operations. He also finds a needle there, waiting for him.

As the fake Dib teams up with Pepsiman, Johanna, Trixter, and Rymden, Zim sets up various traps for them. He eventually gets into a fight with Pepsiman after insulting the Pepsi brand, and quickly begins to fear Pepsiman's power. After fake-surrending, he sends Pepsiman flying back to the crew and quickly goes to hatch his next trap.

He traps the fake Dib inside a capsule and presents his non-existent DNA inside a theatre in the castle, revealing that he is just a puppet. This causes Dib to take off his mask (not literally) unleashing his full power, destroying everything in sight while chasing after Zim for the needle.

On the main tower of the castle, however, Zim reveals his true plan - To open a portal from his universe to the Knitterverse using the Needle and send the Tallest here, not knowing of the Tallest's current location and the Knitterverse's powers. Thus, the machine explodes, and Zim is injured by the explosion, knocked out.

The explosion causes objects from different universes to fall out of a small crack in space-time, and an anvil coming out of it is eventually the thing that kills the fake Dib. However, before Dib is killed, Zim manages to steal the Needle from him. However, Trixter uses her Hexasword to knock Zim away from the building, as he drops the Needle and flies off, screaming.

He does not reappear until the near-end of the Ice Prince Arc. Sometime before the events of that arc, he made the insides of the snowy mountain his new base of operations, where he constructed spider robots capable of creating illusions based off of people's memories. He uses these when Thanos, Marisa, Kagerou, Greg, Shockwave, and the Ice Prince end up falling inside the base after a battle.

After they defeat the spider robots, Zim reveals his face to the others, at first believing they are the same group who defeated him before, but quickly learning that they are different. He has a brief battle with them in a mech he created, where he nearly wins when he begins using sleep gas to cause his foes to fall asleep.

However, the Ice Prince and Greg team up to stop Zim, by Greg putting Zim's sleep gas-defending mask off and Ice Prince freezing him in a block of ice. He is then thrown down into one of the pits inside the mountain, where he stays... For now, at least.

Personality
While most Irkens in the Irken Empire are ruthlessly loyal to their masters, Zim is considered overzealous by their standards. He is rude, arrogant, and overconfident, and obsessed with causing destruction and mayhem, to the point where it causes trouble for even his own allies, a fact that he is incredibly oblivious to.

No matter how hard he tries in his attempts to conquer it, he is incredibly bad at his job. His plans always end up failing due to his own arrogance. Despite this, he is incredibly loyal to his superiors and is willing to go to ridiculous lenghts to impress them, although his self-absorbed nature prevents him from acknowledging his failures.

Despite his stupidity, however, he is incredibly intelligent in terms of technology, capable of making machines able to warp planets to the other side of the galaxy in a day's time. However, he fails to use the full potential of this ability of his and usually becomes distracted by minor threats.

He also seems to want to rely on his enemies for motivation, strangely, finding missions "boring" without someone around to try and stop his evildoings.

Powers and Abilities

 * PAK: As an Irken, Zim relies on his PAK for survival. It contains all his memories and personality. If the PAK were ever to be taken off, he would have 10 minutes to live. If he does not get the PAK back in that time, he will die of suffocation.
 * Claw Retraction: From his PAK, Zim is able to summon spider-like claws, which he can use to scale or attach himself to walls.
 * Gun Protrusion: Zim is also able to transform his claws into guns.

Trivia

 * His theme is the Invader Zim theme song.
 * He commonly wears a "human disguise" when interacting with actual humans, although the disguise is just him putting on fake human-looking eyes and getting some black hair on his head.
 * He is seemingly older than any other human being on Earth (his, at least).
 * On the VS Battles Wiki, Zim is depicted as being Low 7-C physically.