Board Thread:General Discussion/@comment-43281069-20190806112332/@comment-26868869-20200121214339

Close is punk (specifially Sid Vicious). Char designer Nakatani Yukiko made him so after seeing that he has to wear a padlock. From there, all the main villains became music themed, but it is never worked into the story aside Towa's violin gimmick. On the others, Shut is visual kei. Lock is Oshare Kei. Towa is classical music. Stop and Freeze are Daft Punk/Deadmau5 and other such electronic music artists.