Udyr Skin Idea: Li Shang Udyr
Short concept.
Bear stance becomes "Great Typhoon stance"
Turtle stance becomes "Tranquil forest stance"
Tiger stance becomes "Coursing River stance"
Phoenix stance becomes "Raging Fire stance"
You make the associated VFX changes, and boom, profit. I see no downside.
EDIT: Oh, and he needs his passive, "Dark Side of the Moon"