The Irken Empire is a major antagonistic faction in Invader Zim. This consist of a race of insectoid hominid organisms called Irkens. Ever since their home planet of Irk was accidentally almost destroyed by Zim, many parts of the race live on the gigantic ship called The Massive.
Irken society is based on height. The shortest are subjected to harsh labors while the taller Irkens are given easy jobs and are treated with respect. The tallest Irken of each generation becomes the leader no matter their social status or qualifications. This rank is called the Almighty Tallest. If two Irkens of the same generation are the same height they rule together. Such is the case of Tallest Red and Tallest Purple.
The ultimate goal of the Irken Empire is to dominate the universe. They do this by sending a select Irken, who has been given the title Invader, to an enemy planet. Once on the planet they will blend into the inhabitant's society and learn their weaknesses with the help of a Standard Information Retrieval or S.I.R unit. Once the weaknesses are learned, the Invader informs the Almighty Tallest and they send the large Armada to wipe out the planet or enslave it.
If the series would have continued, the Almighty Tallest would have fallen and Zim would have taken over as leader in the supposed final episode.
Known Irkens
- Leaders
- Almighty Tallest Miyuki - Deceased
- Almighty Tallest Red - Current
- Almighty Tallest Purple- Current
- Almighty Tallest Spork - Deceased
- Control Brains
- Commanders
- Invaders
- Invader Alexovich
- Invader Chin
- Invader Dooky
- Invader El
- Invader Flobee
- Invader Gooch
- Invader Grapa
- Invader Groot
- Invader Jim
- Invader Kim
- Invader Koot
- Invader Krunk
- Invader Larb
- Invader Lardnar
- Invader Nen
- Invader Pesto
- Invader Poot
- Invader Sklud
- Invader Skoo
- Invader Skoodge
- Invader Skutch
- Invader Slacks
- Invader Slant
- Invader Sneakyonfoota
- Invader Spleen
- Invader Sploodge
- Invader Sqood
- Invader Stink
- Invader Tenn
- Invader Tim
- Invader Yoogli
- Invader Yuli
- Invader Zee
- Invader Zim - Banished
- Other
- Announcer - Announcer
- Bob - Service Drone
- Comms Officer - Comms Officer/High Ranking Officer
- Gashloog - Fast Food Drone /Employee at Shloogorgh's Flavor Monster on Foodcourtia
- Hok - Scientist
- Little Timmy - Irken Smeet
- Floog - Scientist/Second in Command to Commander Theen
- Rarl Kove - Advisor
- Sizz-Lorr - Frylord on Foodcourtia
- Skrang - Engineer
- Tak - Janitorial Drone
Gallery
 Villains
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