- Ryuichi's name contains the kanji for "Safeguard, protect" (護 go?), "Buddhist temple" (寺 ji?), "mountain" (山 yama?), "dragon" (竜 ryū?), and "one" (一 ichi?).
- Ryuichi's appearance and Quirk may be a reference to Godzilla.
- Additionally, parts of Ryuichi's surname are homophonous to parts of the Japanese pronunciation of Godzilla (ゴジラ Gojira?).
- My Hero Academia: Vigilantes Manga: Chapter 94.5.
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