The 'Peppa Pig' is interesting in that it does not feature a present new villain as such.Since it's a kids show, it is light-hearted, simple, and relatable. Almost no conflict is involved in its format.Focus of is Peppa Pig and her family, your friends. It tells show-tales anecdotes of them carrying out their daily operations.That being said, if we aim for the edges of the question, then we would also have to say that the situation or circumstances are often the negativity to be overcome in many of the episodes.You can make that George is trying to get along with younger sister Peppa, or sharing when it's his turn around this turn and participating, etc. Remember in a child's world, these things can feel like 'big' problems. The major 'conflict' in most episodes is always to be resolved among them or by other means.There's no savvy villain who ever troubles Peppa and her friends. It is all about teaching the children how to grow up, learn and face those everyday childhood issues like sharing, compassion for others---even if they happen to live in a particularly dirty puddle at the moment.