Adult Rex, from the game XC3's expansion introduced in DLC4 (Future Redeemed). I was commissioned to create a render that could stand up well enough against all of the Smash Ultimate's roster. Usually it means putting a little extra care in materials and mesh detailing.
I did not create the base mesh, it was ripped directly from XC3. but I did end up making my own materials for extra detailing, as well as retopologizing the model where I think it mattered most.
I created bumps and detailing. I created a cat-rigged which I then constrained the original armature to, for easier posing. I bumped up the mesh for smoother surfaces where it mattered more (mostly upper body). Then, due to the textures by default being pretty de-saturated, I added a ton of post-processing which included adding life to the skin and color correcting.
Credit to Monolith Soft for XC3 and Adult Rex.