Cottonee and its next evolutionary stage ... made for the best poster-child for the merit of single-stage evolution Pokemon, ...

Doing a little impromptu training on their way to Nimbasa City and Ash’s next Unova Gym Battle challenge, our heroes are suddenly visited by what appears to be a lone Cottonee. This is unusual ...

For example, Winter Caverns includes Drilbur and Joltik, while Spring Soiree features Cottonee and Ducklett. Summer Vacation has Emolga, and Autumn Masquerade offers various Unova Pokémon.