I have only a basic understanding of what this video game is all about, but my first exposure to the little characters was via Ravelry. I saw crocheted amigurumi with legs but no arms, backpacks and what looked like visors on. Well, I found a quick pattern and made a pink one.
Then I made a yellow one.
Then I made a green one. Eeek, I can’t stop. They are very cute, even though in the game they are actually killing each other!!
I’ll link to my Ravelry project page. The pattern I used had to be adapted somewhat as I found it a little too “bare bones” and in one place completely incomprehensible. There are others out there. Just use Ravelry’s advanced search. You’ll find them.