How to make high poly ~X4K hero / heroine player character .blend rig for Flare?

[WithinAmnesia]

How to make Wandercall high poly ~X4K hero / heroine player character .blend rig for Flare with a proper female face and matching male version? #854
So I am wondering how to get a ~X4K / 4K high poly hero / heroine player character .blend rig for Flare. Where it renders 4K 2.5D animation frames automatically with a script but the player character models in game look high poly and better than the low poly Flare 3D models. As like mate the poor female Flare low poly 3D model doesn't even have a face lol: https://opengameart.org/content/isometric-hero-and-heroine / https://github.com/flareteam/flare-game/tree/master/art_src/characters/hero + https://github.com/flareteam/flare-game/tree/master/art_src/characters/heroine .

I'd prefer to use the Wandercall assets but made to work where it renders 4K 2.5D animation frames automatically with a script and have a female with a proper face and also a proper male version. The armour options from https://opengameart.org/content/modular-3d-male-female#comment-101141 would be cool to have but I don't want to get sued by Unity. I want to make a commercial game that does not get yanked from Steam after 2-3 years of work being dumb lol.

I hope to make a 4K rendered video game and like I sort of need some help upgrading the hero / heroine player character models. Does anyone know how to do this and is willing to help? I am sorta broke right now and all of my Unity assets are no use due to legal license non-open source issues mhmm. We kind of need an upgrade too for like its the mid 2020's now people expect better graphics. Also even people who render game graphic assets in 1K or 2K it would look way better too for all projects in the community.