What happend to the Jigglypuff that followd ash misty and brock?

Jigglypuff never actually followed Ash, Misty, and Brock. In the episode "The Song of Jigglypuff," Jigglypuff followed Ash and his friends as they traveled through the Kanto region, but it never officially became a member of their team. When Jigglypuff sings, the listeners fall fast asleep, and then Jigglypuff draws on their faces. That annoyed everyone around it. To contain Jigglypuff from running away, Ash puts it into a ball and releases it when he needs it. Later on, Jigglypuff is left in the Pokémon Center.