- All-Star Cast: The cast is made of rising and well known actors, such as Yuuto Uemura, Yuichiro Umehara, Rina Sato, Toshihiko Seki, Joji Nakata, Tomokazu Sugita, Hiro Shimono, Takaya Kuroda, Nobunaga Shimazaki, Takaya Hashi, Ayane Sakura, Maaya Uchida, Michiko Neya and Yu Shimamura. Part two adds Kazuyuki Okitsu, Ayumu Murase, Maria Naganawa and Akane Fujita.
- The Danza: Marcus' ex-girlfriend Erika is voiced in the english dub by Erika Harlacher.
- Relationship Voice Actor: Gai and Seiya are Hiro and Gorou.
- Kyouka and Takuma are Mikoto and Aleister Crawley.
- Marcus, Kiyomi and Amon are Raishin, Yaya and Sigmund.
- Sayaka and Amon are Muse and Rubrum.
- Shin, Seiya, Midoriko and Amon are Akira, Hayato, Maia and Sougon
- Takuma and Arnys are Embryo and Zola
- Shin and Sayaka are Takeru and Hinata.
- Seiya and Midoriko are Ox and Chicken.
- Amon, Midoriko and Himiko are Kongou-sensei, Bort and Red Beryl.
- Marcus and Mina are Connie and Annie.
- Seiya, Naoki and Himiko are Goblin Slayer, Lizard Priest and Guild Girl.
- Midoriko and Marcus are Ochako and Dabi.
- Naoki and Shin are Ragna and Naoto, Beethoven and Sousuke and Remedius and Gayus.
- Self-Adaptation: The manga author himself, Toshiki Inoue wrote the script for the anime adaptation.
Trivia / Sword Gai