Clefable

Changing negligibly when it evolves into Clefable, I feel like this line was also intended to be the poster child of the normal type, even if the first pure normal type we encounter is Rattata. Later, however, the clefs' and other pink, globular normal types would be retconned as actual fairy types, and I just want to say how grateful I am that our eighteenth and presumably final new type wound up being something as interesting as fairy and not the "light" type the fandom kept pushing for as a counterpart to "dark." The two are similar in some fundamental ways, but "fairy" just feels, I dunno, a little more monster-themed, I guess? The much-hypothesized "light" type carried an angelic, holy sort of theme that would have been far more limiting, and while the majority of fairy pokemon are cute and pretty, they've already got their share of spooks and weirdos that never would have fit into "light."

Besides...the counterpart to "dark" is fighting. The intention of the two is pretty much closer to "villain" and "hero" types.