I’d like to think Miyuki had something to do with making these two
idiots invaders. Like, in her eyes, although Zim messes everything up he does, he still could become a good invader with some discipline training perhaps. She thinks his love for destruction could come in handy. Skoodge could be a good one if he was a bit more confident.
Canon-like speaking it wouldn’t be possible because as soon as Miyuki got to know Zim, she got killed. But hey. x’D;;