I’m a piece of shit but I wanted to make this post in case there are more people out there who had the same problem as me.
For those who needed a REAL reference of Sonic characters in order to learn how to draw them from different angles and know their anatomy well.
I came across Sketchfab, here people upload 3D models online (some FanArt, other originals extracted from the games, one realizes when they see them or just read the description), including models of old games like Sonic R. And of course, not only Sonic, you can find 3D models of animals, monsters, people, armors, weapons, vehicles etc, so I think it is very useful for any artists!
Anyway, I leave the links to models that I personally liked the most.
In some models (like this one) you can change the animation/position here.
Lost World (+animation+poses)
Lost World T Pose - Eyes Closed (Better Rotation)
Lost World IDLE Pose Eyes Open
Unleashed T Pose Eyes Open 1 (Color Base)
Unleashed T Pose Eyes Open 2 (with shadows)
These last two have some subtle differences, I don’t know what the original is, but it still looks good
Adventure 1 (Dreamcast) T Pose
Super Smash Bros Brawl T Pose
Super Smash Bros Brawl Pose
Unknown Super Sonic T Pose Eyes Closed
Unknown Super Sonic Pose (with Emeralds)
Secret Rings Darkspine T Pose
Generations Classic Sonic
Generations Classic Sonic T Pose
Generations Sonic Classic Pose
Generations - Classic Sonic Statue Pose
Sonic the Fighters -T Pose
Sonic The Fighters Super Sonic T Pose
Sonic R - Classic Sonic - T Pose
Sega Saturn Style - Classic Sonic
Sonic Boom T Pose (Sonic Dash 2 Version)
Shadow (with Sonic Gai Poses!)
Super Shadow (with crazy feet!)
Generations - Shadow Statue Pose
Bonus: Sir Lancelot Sword
I WILL KEEP UPLOADING LATER!