I'm not sure that's a griffin. I'm pretty sure that's an owlbear.

an owlbear with strange proportions

Nah, this must be referencing one of the old Capcom Dungeons and Dragons arcade games. It's an Owlbear.

Maybe it's just the lighting but left butt cheek looks larger than right

I'm fairly certain that is Firiona Vie from Everquest. The colors and basic look match pretty well.

No, it's from D&D. Firiona vie just looked like any generic elf like this one.

I think it's a stuffed owlbear, which may explain the proportions.