Thing 1 and 2 morph: https://www.renderhub.com/bigspider95/thing-1-and-2-character-morph-and-skin
Thing 1 and 2 texture: https://www.renderosity.com/marketplace/products/124592/the-duke-for-g3m-g8m (Unavailable)
Thing 1 and 2 hair: https://www.renderosity.com/marketplace/products/117415/phantasm-hair-for-g3
Thing 1 and 2 body Suit and boots: https://www.daz3d.com/x-fashion-dark-cat-outfit-for-genesis-8-male-s

Thing 3 character: https://www.renderhub.com/romfx/rfx-wandinha-fn-for-g8f-and-g8-1f

Thing 4 character: https://www.renderhub.com/lykomodels/lyko3d-fantastic-four-first-steps-mcu-outfits-for-g8