Search gender: all male female ヒャクロウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: hyakuro Katakana: ヒャクロウ 0 Kanji: 百郎 Meaning: 百Hundred. Kanji character for the number 100 (hundred). An example of a large number. A lot of things. 郎Male. Men. Young men. A word that refers broadly to boys. A retainer. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > ヒャクロウ Japanese Boy Names Variations.