Those are the heads from full characters I created for multicolor 3D printing. Topology is just a standard Dynamesh. Zip file contains obj and wrl with texture in png.
In this pack I am selling those models: MD House - https://www.cgtrader.com/3d-models/character/man/house-mdSheldon Cooper - https://www.cgtrader.com/3d-models/character/man/sheldon-cooper-big-bang-theory-jim-parsonsDaenerys Targaryen - https://www.cgtrader.com/3d-models/character/woman/daenerys-targaryen-game-of-thrones
Polygons in the description given for Sheldon 3D modelHouse - 1,206,054/603,335Daenerys - 918,510/459,622