>>39514182decidueye is ugly edgy trash. it's very obvious that game freak was trying to copy greninja's success, since greninja is also ugly edgy trash.
the main reason decidueye didn't become the next greninja is because game freak put it up next to a wrestler and an idol - two archetypes that japan loves and that couldn't be shoved aside as easily as chesnaught and delphox were. they pretty much screwed themselves out of being able to shill it.