In the Japanese release of the game, Klavier Gavin is portrayed as a J-rocker archetype, and as such peppers his speech with random English words and phrases "as a way to elevate his coolness factor". As such, series localization director Janet Hsu felt they needed to make Klavier "sound cool with a hint of foreignness in the English version". It was decided his J-rocker persona would be localized into English as a German rockstar, figuring that he was perhaps inspired by fellow German bands such as Rammstein and Tokio Hotel, who were popular in the late 1990s and early 2000s.