The pink Butterfree (Japanese: ピンクバタフリーpink Butterfree) is the first alternately coloredPokémon in the anime. It was created before alternately colored Pokémon appeared in the games, possibly to differentiate it from the other Butterfree in the episode.
In the main series
Appearance in Spurt!, along with Ash's Butterfree
It first appeared in Bye-Bye Butterfree, where Ash's Butterfree fell in love with it. Though it initially rejected Butterfree's advances, the pink Butterfree changed its opinion when it fought to save it from Team Rocket. At the end of the episode, the two became mates and Ash's Butterfree, with its Trainer's blessing, flew away with it across the ocean.
In the movie's alternate continuity, Ash and his Butterfree saved the pink Butterfree from a Fearow. The two Butterfree fell in love, and Ash allowed his Pokémon to cross the sea with its newfound mate.
Personality and characteristics
The pink Butterfree appeared to be very decisive in nature and also somewhat aggressive. When Ash's Butterfree showed off its moves, the pink Butterfree deliberately ignored it, eventually going so far as to knock it out of the air. It was not until Ash's Butterfree tried to rescue it and the other Butterfree from Team Rocket that the pink Butterfree gained heightened respect for it and agreed to be its mate.
The pink Butterfree shares all physical characteristics with normal Butterfree except for a pink body and a pinkish tint to its wings. The eyes, mouth, arms, legs, and edges of the wings are all colored the same as that of a normal Butterfree.
The Pink Butterfree appeared in I Choose You! where she was seen being chased by a wildFearow. Ash sent out his Butterfree to drive away the Fearow with Gust.
Later, the Pink Butterfree was seen with a flock of Butterfree flying south. Seeing as to how the two Butterfree got along, Ash's Butterfree was given a choice to fly with her and it accepted. After Ash said a tearful goodbye to his Butterfree, the Pink Butterfree flyed south with Ash's Butterfree.
↑Never confirmed in the original series. M20 gives it the features of a female added in Generation IV.
For more information on this Pokémon's species, see Butterfree.