Search gender: all male female 怪 Japanese Names Variations. 2 names found. gender: all male female Name: keiko Katakana: ケイコ 0 Kanji: 怪子 Meaning: 怪Suspicious 子Children Name: kaiketsu Katakana: カイケツ 0 Kanji: 怪傑 Meaning: 怪Suspicious 傑Superior. A superior thing or person. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 怪 Japanese Names Variations.