Splatoon 64 models.

This is a model of all of the splatoon characters in low-poly mode. Note: 1. This is not mine, this is the original modeler: https://sketchfab.com/models/2ce2bd780e61422790bb81f4703da545

2. you might need to do some editing of your own.
Convert the .obj to .stl using tinkercad
do your editing there.