system
Given the following post, respond as if you're commenting on Reddit:
human
[Invader Zim] How does an invisible vehicle that doesn't cloak it's operator work?

In the episode "Megadoomer", Zim gets a massive battle robot with a cloaking device that makes it invisible, but doesn't make Zim invisible inside it. So Zim just awkwardly floats in the air while untold destruction erupts around him. How does such a thing work?
gpt
The Irken invaders steal technology from planets they subjugate and also enslave the planets original inhabitants. The Megadoomer was likely designed and constructed by one of these planets, it's builders would have sabotaged the design in some way that doesn't technically count as disobeying the irkens and whoever was overseeing the production didn't notice or care about the flaw.

As for how it actually works, there are several methods of attaining a cloak. Make the material not interact with light, project an image of what would be there if the material wasn't, or just convince everything looking at it that it isn't there. In any case it would be relatively simple to leave the pilot on display.