* FanNickname: Mitsuke Sarue tends to get called [[{{Pokemon}} James]].
* NamesToKnowInAnime:
** Creator/RyotaOhsaka and Creator/JoshGrelle as Demon Lord Satan/Maou Sadao
** Creator/YokoHikasa as Hero Emilia/Yusa Emi
** Creator/YukiOno as Alciel/Ashiya Shiro
** Creator/NaoTouyama and Creator/TiaBallard as Sasaki Chiho
** Creator/HiroShimono and Creator/AaronDismuke as Lucifer/Urushihara Hanzo
** Creator/KanaeIto as Kamazuki Suzuno
** Creator/AzumiAsakura and Creator/MonicaRial as Emeralda Etouver
** Creator/HirokiYasumoto and Creator/ChristopherSabat as Albert Ende
* PortmanteauSeriesNickname: [=HataMaou=]
* SleeperHit: Before airing, no one was really looking forward to this series. The first episode's great humor changed everyone's mind. As the series continued, everyone enjoyed the humor, action and characters. It was popular enough to get 9th in Newtype's most popular anime for the year of 2013.
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