Search gender: all male female 瓜 Japanese Boy Names Variations. 1 names found. gender: all male female Name: ryuga Katakana: リュウガ 0 Kanji: 龍瓜 Meaning: 龍Dragon. An imaginary animal. An outstanding person. A hero. A parable of the Son of Heaven. A word used for things related to the Son of Heaven. Dinosaurs. 瓜A general term for plants in the cucurbitaceae family. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 瓜 Japanese Boy Names Variations.