Philip "Phil" Richard Paul and Lillian "Lil" Marie Jill DeVille are the twins from the Nickelodeon shows Rugrats and All Grown Up!, and are among the series' original characters.
In Rugrats, they were dressed to match; both wore pink and black-striped shirts, and overalls with a polka-dotted handkerchief on the left side, and both had a small amount of brown hair on top of their otherwise bald heads.
They also shared the same interest: consuming worms (which they have often called ‘Chocolate Spaghetti’) and toilet water. They often used their ‘full’ names, Phillip and Lillian, especially when arguing. Their parents Betty and Howard often confused the two, despite their being different sexes. Lil is 2 minutes older than Phil.
Before All Grown Up!, a few Rugrats stories touched on attempts to either differentiate the twins personality-wise, however, separating the twins only got serious in the new spin-off. Its premiere, "Coup DeVille" (first US tx: April 12, 2003), was focused on the twins. Lil strongly retaliated at being paired with Phil on a science project, as well as being treated ‘like a single package’ with Phil, and even refused a trip to Twins Canyon with her family on that principle. This episode also repeated the ‘Lil is older’ fact from the original series, and also revealed Lil to have an even longer name than was previously let on: Lillian Marie Jill DeVille. Lil moved to a separate bedroom in this episode.
Since then, the twins have evolved distinctly different personalities. Phil still enjoys repulsive objects (although he is beyond eating worms and insects, he once won a science fair by growing mould on cheese and socks), and has been referred to as ‘socially inept’, while Lil is beginning to find interest in boys and become more social, and she has also picked up an interest in sports, in particular soccer.
Referencing their baby days when their favourite thing was to eat worms, Phil & Lil's favourite food in All Grown Up is Spaghetti.