Item description:

There is a popular conspiracy theory for Pokémon, and it goes like this: Butterfree and Venomoth’s sprites were swapped late into development. There is a lot of evidence for this, the main evidence being that Venonat and Butterfree have identical eyes and mouths. It is a theory that “can’t be unseen”.

This patch changes the sprites of Butterfree and Venonat so that people who cannot unsee this theory can play their Gen III games with “corrected” sprites.