Buttons, aka William Herald, is a patchwork doll that formally used to be a Pureheart. Having formally been a Trivial member running Fabricon City with who is now known as "The Puppeteer", he was betrayed by his partner and left to die. However, Tavi saw the goodness in his heart and wanted to give him the second chance he deserves. Now a part of Glyph, Buttons is seeking Justice on the corrupted laws of what once was his colorful city.

As a character, Buttons is very friendly and kind yet having a strong sense of justice when it comes to handling problems. Despite his friendly demeanor, he's not afraid to get serious when needed. Despite this, he tries his best to hold back tears and stops himself from being emotional in front of the others, especially after showing his emotions to someone that ended up hating him for it and hurting him in the end.

In the band, Buttons is the drummer. A singing demo with the audition is optional for him, so you don't have to be a singer in order to audition for Buttons. If you do, he has a tenor singing voice.