Jigglypuff (anime)/Anime/Personality and characteristics

Jigglypuff is characterized by its sassy attitude and love of attention. In The Song of Jigglypuff, it secretly attacked Pikachu as an envious response to Ash's affection for his Pokémon. Similarly, in Same Old Song and Dance, it bullied two who performed with their Trainer. Jigglypuff is also quick-tempered, ending potential friendships with those who upset it, like with Meowth in Tunnel Vision.

Jigglypuff is perhaps best known, however, for its running gag. Whenever it sees that its song puts its listeners to sleep, it inflates angrily and doodles over the faces of its audience with its marker pen. However, there have been two instances in which characters have listened to a portion of its song without getting drowsy: the first being during Jigglypuff's first performance in The Song of Jigglypuff, and the second during its brief appearance in The Case of the K-9 Caper!, when and  were trying to fight off a brainwashed  Squad. In A Poké-BLOCK Party!, its song was finally heard completely by a, although Whismur fainted during Jigglypuff's second performance due to exhaustion from an unrelated battle that happened earlier.

Besides its marker, Jigglypuff also has a voice-changing microphone, which it picked up in The Case of the K-9 Caper!. However, it has yet to use it.