But in “Bye Bye Butterfree,” Butterfree leaves Ash in a way that almost seems like uncontrollable destiny.
No, that honor goes to “Bye Bye Butterfree,” the Pokémon anime episode that introduced me to the idea (and reality) of sobbing over fictional characters.
The pink Butterfree notices that Ash’s Butterfree is dope, and they decide to be partners.