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It grows up as a child. Then, to mark its passage into adulthood, it kills a (uh, something), takes its skin, and wears it as a mark of honour for the rest of its life.
So basically, the child would lack the hood and cape.
It looks basic enough as it is, I don't see how we could make it even simpler. Well, I actually have a few ideas, but I'd rather see it without pre-evolutions.
That seems to be the concencus, and it looks just "cool" enough to be evolved once, like many Gen 5 pokemon that already exist. Make it evolve at a ridiculously high level, and we will be in business!