My dad always told me that if it wasn't haram or mentioned back then, then it was bad to assume it was haram now. He said that many people seemed to think everything was haram, and that if it wasn't, they would find a reason to make it haram. He on the other hand, believed that what was never mentioned, and can't be linked to haram, was permissible.
Don't know how legit that is, basic google search tells me that either my search terms are shit, or he was chatting shit. Like when he told me turkey was like pork, and flat out haram....which he only said because he hates turkey.
You know what would be funny? if a rare pokemon was in Mecca.
It would be a miracle from allah, probably proof that even pokemon know the truth.