You don't need 3d software to maker characters out of Mike or Vicky ... you use either the existing morph dials for each body part, or you can buy MAT (material) or MOR (morph)pose files from here that change characteristics of characters. You can also prowl around looking for morph files to import, usually face files. The other complementary method of character changing is with different testure files. Skin color changes plus the standard ethnic morphs on Mike or Vicky will do a lot. There are some body shape pose files ... check the store This is a character I built from a Dr Sapiens character I found God knows where, plus a few of Mike2's morphs.
Gordon