Pokémon/Pokédex/Butterfree

TM/HM

 * RB/Y/GS/C/RS/FL: Double Team, Hyper Beam, Psychic, Rest, Solarbeam, Toxic
 * RB/Y/GS/C: Swift
 * Y/GS/C/RS/FL: Flash
 * GS/C/RS/FL: Attract, Frustration, Giga Drain, Hidden Power, Protect, Return, Sunny Day
 * RB/Y: Bide, Double-Edge, Mega Drain, Mimic, Psywave, Rage, Razor Wind, Reflect, Substitute, Take Down, Teleport, Whirlwind
 * GS/C: Curse, Endure, Nightmare, Sleep Talk, Snore, Swagger, Sweet Scent
 * RS/FL: Aerial Ace, Facade, Rain Dance, Safeguard, Secret Power, Shadow Ball, Skill Swap, Thief

Sexual Dimorphism
Male Butterfree have wings with sections containing white interiors and black outlines. Female Buterfrees are the much the same way, but include two black filled sections on the lower right and left sides of the wings.

Trading Cards

 * Jungle #33 - Butterfree
 * Neo Discovery #19 - Butterfree
 * Expedition #5 - Butterfree
 * Expedition #38 - Buttefree
 * EX FireRed and LeafGreen #2 - Butterfree