I have worked as a Concept/Texture/LookDev Artist on that original animation from Tendril Animation Studio. You can check the animation, full Credits, and more about this production directly at Tendril's website ! -> https://tendril.ca/work/keinon/
This is the Hero Demon that fights Keinon in this Action Short animation, here you can see some progress shots, variations.
Everyone in the team made a great effort doing an amazing job and having a lot of fun doing it.