Marshadow

Myst is a mysterious Marshadow vigilante who hides in the shadows, silently protecting the city from dangers and criminals, becoming an urban legend in the comet era. After a comet flew by the night sky, a new era arose for Humans and Pokémon. Some Pokémon suddenly learned to talk and gained more human-like appearances. Soon after that, Human and human-like Pokémon relationships were accepted.