Trivia: DD Fist Of The North Star
- Actor Allusion: Akira Kamiya, the original voice of Kenshiro, plays Ryuken. When Chibi!Kenshiro hits Ryuken's pressure point to make him younger, his face transforms into the original Kenshiro's design including the eyebrows.
- Hey, It's That Voice!: To get the most notable out of the way, the original Kenshiro seiyuu himself, Akira Kamiya, voices Ryuken in this series. He even brings out his old Kenshiro voice for one comical segment.
- Tomokazu Seki voices Toki, Club and Amiba. He had previously voiced Toki and Amiba in Hokuto Musou and Shin Hokuto Musou.
- Ryōtarō Okiayu voices Shin. He also voiced Hyo in Shin Hokuto Musou.
- Daisuke Namikawa (Yu Narukami and Giorno Giovanna) voices Souther. He had previously voiced Bat in the Den movies.
- Tsundere queen Rie Kugimiya voices Tou (Rihaku's daughter)
- In the original Flash anime series, Raoh was voiced by Taketora, otherwise known as the seiyuu for Akuma/Gouki. Likewise, original series narrator Shigeru Chiba served as the narrator, Muscle Chiba.
- Ho Yay: Parodied as well especially in episode 5 with Yuda who is now outright gay for Rei and even sings a love song for him!