New-ish mod allows you to create custom player models like this! : r/feedthebeast

More Player Models, WINGS & MERMAID TAIL & EARS

Big pack Player models for hl1 : ) [Half-Life] [Mods]

Minecraft Custom Player Models Commissions by TheBrandonFriesen on DeviantArt

Minecraft 1.16.5 - More Player Models

Gmod: Enderdragon playermodels by LockRikard on DeviantArt

Half-Life Player models without color [Half-Life] [Mods]

Mod Suggestions

More Player Models 2 (Adds a character creation screen, animations and more) - Mods Discussion - Minecraft Mods - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum

Customizable Player Models Mod (1.20.2, 1.19.4) - Make Your Own Cosmetic

More Player Models 2 (Adds a character creation screen, animations