Characters on the TV
show Invader Zim
, on Nickelodeon
In Irken culture, height determines status. These two leaders are of the same exact height, so they rule together. Zim is the shortest, which is one of the reasons others don't like him; he has the lowest social status.
Since Irken aliens are a society where height rules, Zim is the shortest, and the Allmighty tallest being of great height are the leaders. It's how they got their name and power. One is known as Red, the other Blue.
All they really do is sit back, make some decisions, like to turn a planet into a parking garage. They work aboard the mothership. As the show progresses, they seem to act stupider and stupider.
They are voiced by Bruce McCulloch and Kevin McDonald, of Kids in the Hall fame.