This makes generating different character bodies easy and quick, with shapekeys and pre-made multiresolution.

Use shape key sliders to modify the body, you can even go beyond by changing the max range or add your own vertex groups if you want to affect only certain parts of the body.

swap the multiresolution to change the muscle definition, just click the folder icon in the multires modifier and choose between included multires presets

use the armature to pose the character, It's a slightly altered rigify rig, so you might need to have the rigify add-on enabled

customizable skin texture, color, roughness, discoloration

the mesh is 6155 verts, It's mostly quads, but there are 4 tris, one on each thumb, under the thumbnails and one in each nostril, so they shouldn't make a difference

use v1 for pre blender 4.0

v1.11 updated for blender 4.0 layers, fixed toenail weight painting