Search gender: all male female Hyakuo Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: hyakuo Katakana: ヒャクオ 0 Kanji: 百男 Meaning: 百Hundred. Kanji character for the number 100 (hundred). An example of a large number. A lot of things. 男Male. Adult male. Son. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Hyakuo Name Meaning, Kanji Variations.