These creators are "free" in the sense that you can watch all their streams/VODs for $0, though they of course accept tips/subs.
A tool for generating random VTuber character concepts for free use (for indie developers or aspiring VTubers looking for inspiration).
There are three main ways to get a model for free, depending on your technical skill and goals: Make Your Own 3D VTuber Avatar Using Vroid Studio For FREE