A character data book titled Nurarihyon no Mago: Official Character Data Book: Secret Ayakashi Notes (ぬらりひょんの孫　キャラクター公式データブック　妖秘録, Nurarihyon no Mago: Kyarakutā Kōshiki Dēta Bukku: Ayakashi Hiroku) was released on July 2, 2010.
Ein Sonderband mit dem Titel Nurarihyon no Mago: Official Character Data Book: Ayakashi Hiroku (ぬらりひょんの孫　キャラクター公式データブック　妖秘録, Nurarihyon no Mago: Kyarakutā Kōshiki Dēta Bukku: Ayakashi Hiroku) erschien am 2. Juli 2010.