Winter Cam-dle

I will never recover from how badly the ball got dropped for the Zeti.
They had a lot of promise as some other reoccurring antagonist force but every single part of them in execution is so half-baked that I can't even blame most people in fandom and amongst the company making the games for being disinterested in them.
They have zero intrinsically interesting traits other than Zik being Zavok's teacher and Zomom being one of the few villains Sonic can't get a rise out of.
They have strong silhouettes but their designs are so simplisic that they always look unfinished and toyetic no matter how detailed the game around them is.
Their voice actors put in a good show, but they as mentioned have no material to work with.
They have an interesting concept, being the last of a species of magnokinetic space-oni, but literally nothing about that is conveyed in their design.
They have a nice theme, but all six have one major theme and thats it.