In this Invader Zim/Undertale crossover AU, first off, Dib is a monster. Since he was in the UDERGROUND, Zim wouldn't know how true humans were like, thus making it harder to fit in. As a result, Zim was found out by the humans. In the AU, Irkens have SOULS similar to monsters. They're pastel coloured, looking white in daylight. The humans thought he was a monster that crawled up from the UNDERGROUND, trying to absorb their SOULS. Zim managed to fall into the UNDERGROUD with GIR, hiding for a while before figuring that his Irken form would fit in witht he monsters. He usually tries to stay out of the way from monsters, thinking that they would think he's a human and run him out like they did. After hearing that he could absorb SOULs, he figured he'd rule the UNDERGROUND. After killing a monster, he realized that he would have to keep them all alive, since they just turn to dust immediately. He doesn't know about boss monsters.
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Gravity Falls, UNDERTALE, and Invader Zim AUs and AU starters!
General FictionI'm just putting this here to dump it because I thought that I should. Perhaps I'll take some of these ideas and make a story out of it later when I'm bored/blocked.
