Corrupted/"Adult" look (from TLoS : A New Beginning) :
post #43625 post #57407

Regular look (from TLoS : Dawn of the Dragon) :
post #49886 post #81651

Skylanders redesign (primary color is now purple with pink/red countershading, wings and forehead markings; head has been made much wider; eyes are blue instead of blue-green):
post #201110

Skylanders Academy redesign (compared to Skylanders, the eyes are smaller and the orbits are now pointing forwards, the head markings are now grey and the proportions have been changed to make the jewelry less proeminent, eyes are back to blue-green) :
post #1408304 post #2505823