Guyver III (Guyver 3; Agito Makishima) from anime and manga Bio-Booster Armor Guyver (強殖装甲ガイバー).
Mostly referenced 2005 anime TV series and the manga, but also the 1989 OVA.
Guyver I 3D model here: https://skfb.ly/6UXXy
Guyver II 3D model here: https://skfb.ly/6V6yA
Guyver 0 3D model here: https://skfb.ly/6VA8J
Update 2022.05.14: New texture for eyes, finalized forearms and lower legs (no more mirrored shape), remodeled thighs, fixed knee topology, minor head tweaks.
Rendered with Blender Cycles X
Topology