Sidney "Sid" Chang is one of the main characters from the Nickelodeon animated series The Casagrandes, introduced in the fourth season of its parent show The Loud House. She is Ronnie Anne Santiago's best friend who lives in the apartment above the Casagrandes', along with her parents, Stanley and Becca, and her younger sister, Adelaide. Sid is a very cheerful girl who is always up for trying any new thing that she can. She enjoys listening to K-pop music (especially her favorite b