They either have their head in the middle of their body and arms on the top, or the only organic section is the head with the rest of the body being some kind of robotic suit or cybernetic enhancements.
They also seem to be very easygoing and polite, even when Zim demands "super-weapons" from them. The Plookesians never said they would give these to him, but they give him some they have laying around just to be nice. They display a happy-go-lucky but mildly sarcastic sense of humor.
For example, when Dwicky asks them if they use their ship to "fly through the stars", Mooshy sardonically informs him that in a literal sense "flying through the stars would be pretty stupid, man! But, yeah, we fly around." However, they show no hostility or judgement toward the human race, and kindly allow him to join them when he asks to travel with them through space. Thus, Mr. Dwicky happily leaves Earth with the Plookesians aboard their starship.
|Species of Invader Zim|
|Blobs • Brain-Eating Parasite • Hogulus • Humans • Irkens • Large-Nostril People • Martian • Meekrob • Nhar-Gh'ok • Planet Jackers • Plookesian • Rock Species • Screwheads • Slaughtering Rat People • Vortian|