- Traditional Chinese Character(HanT):
古久保 健二
- Simplified Chinese Character(HanS):
古久保 健二
- Bopomofo(Mandarin Phonetic Symbols): ㄍㄨˇ ㄐㄧㄡˇ ㄅㄠˇ ㄐㄧㄢˋ ㄦˋ (ㄍㄐㄅㄐㄦ)
- Bopomofo(Zhuyin Keyboard Input/IME): ej3ru.31l3ru04-4
- (ASCII) Hanyu Pinyin: "gujiubaojianer" "Gu3Jiu3Bao3Jian4Er4" "Gu3 Jiu3 Bao3 Jian4 Er4" (GJBJE)
- (Latin) Hànyǔ Pīnyīn: GǔJiǔBǎoJiànèr [ Gǔ Jiǔ Bǎo Jiàn èr ]
- (英文翻譯) English Translation: "Kenji Kokubo"
- (西語翻譯) Traducción Español: "Kenji Kokubo"
- (日文翻譯) 日本語翻訳: "古久保 健二"