Thread:84.198.59.120/@comment-4669534-20120424035651/@comment-4669534-20120424040027

I see you already understood the difference :3 I believe either would work in this case, but I chose plural for a couple reasons: first, there were theoretically multiple Red Gyarados, even though you could only capture one that was specifically designated as such. Second, the phenomenon' occured in multiple games (GSC and the remakes HGSS), making it somewhat of a plural instance. Still, I guess I have to say that either would be arguable in this case.