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What Incineroar's Origin should be:
Incineroar and it's coloration is based on a tiger. As do its colorations. More specifically, a black tiger. Incineroar's shiny coloration might be based on a white tiger. It also shares elements with a professional wrestler. In addition, its category and secondary Dark type bring to mind a heel, a wrestler who embodies vice, in contrast to a face, who embodies virtue. Tiger the dark should also come to mind when thinking about Incineroar. Not only is his colorscheme similar, not only the Dark type, but he's also a heel.