Which unit in the Academy castle do you dislike the most in terms of its appearance?

I don't understand why it says "Iron Golem"? It seems like it should be "Stone Golem," and even the upgraded version is still a stone golem, just painted differently. I've gotten used to all the units, everything is fine, even the Gargoyles. But Djinns still don't appeal to me (visually). Otherwise, I like everything