Yeah Explained chalis in some amount of detail because apparently people can’t (or don’t) read. If you have any ability to understand what you’re reading, this should be quite clear to you. If it’s not…. I’m concerned for your literary analysis abilities. Here ya go. Chaos elfilis happened after soul forgo was absorbed by morpho knight. After it was defeated elfilis (somehow) escaped its grasp, and used a portion of its power that they managed to steal to recreate their body in the same shape as it was when they were whole. (They also used native beast souls? Apparently?) Native beast souls speculation: It could be that elfilis used some of the souls of the beasts they absorbed to sort of… “fill” the gap in their own soul where elfilin would be— and that’s how they were able to recreate their body and powers in such a faithful way. Additionally, while chaos lis’ design origins were probably more like “black and red are cool”, they were also likely based off of a similarly colored moth— the cecropia moth. Why moth? Well they absorbed morpho, who’s a butterfly, and they already kinda looked like a moth, so I assume that’s the reasoning.
“Beautiful” analysis by me Moth image from… like… Wikipedia or something? Screenshot from Kirby and the forgotten land by Hal labs.