You just can't use other figures in VaM 1.X... Only the included DAZ3D Genesis 2 figure!
Therefore, all those great figures from games or animes, have to be completely re-created with basically using those Genesis 2 figure, its morphs and its own texture layout. Especially converting textures is very complicated.
You have to make the VaM figure looks like the game figure, not simply using those figure.
There are some high level tricks, tools and workarounds, and people have done some astonishing things, but it is still a lot of passionated work. So unfortunately it isn't as easy as "pulling over" some models from elsewhere.
This is not answering your question at all, but maybe can give you an insight in how things are done in VaM, and what is doable and what is "less doable".
Maybe there is a big fan of those game characters, who is willing to put some days of work into creating one of them, but don't be disappointed if not.