Pokémon Adventures
In the "Pokémon Adventures" manga, one of the main characters, Green, has a Jigglypuff which is capable of swelling up to several times its size. This allows Green to float with it like a hot-air balloon as well as block narrow passageways—a tactic instrumental in helping Silver and her escape the Masked Man. It evolved in "Breaking the Restraint" into a Wigglytuff alongside two of Green's other Pokémon with the power of her Moon Stones.