- Acting for Two: Nobunaga Shimazaki voiced both Souji and Crabguildy.
- Actor Allusion:
- This isn't the first time Bryn Apprill voiced a girl with red twintails nor a girl with red twintails who's associated with fire.
- This isn't the first time Sarah Wiedenheft has voiced a girl named Aika with twintails and a complex about her small boobs.
- This isn't the first time Maaya Uchida has played a team mentor to a parody Super Sentai team.
- All-Star Cast: Nobunaga Shimazaki and Maaya Uchida are notable among the protagonists, but Ultimaguil in particular includes Tessho Genda, Yuichi Nagashima, Tetsu Inada, Nobuyuki Hiyama, Takaya Kuroda, Shin-ichiro Miki, Nobutoshi Canna, Mitsuo Iwata, Sho Hayami, Yōko Hikasa, and Yukari Tamura
- Relationship Voice Actor:
- Viewers who have watched Love, Chunibyo & Other Delusions will also notice some of the girls voice some characters. Tail Red is voiced by Sumire Uesaka (Dekomori), Twoearle is voiced by Maaya Uchida (Rikka) and Erina is voiced by Chinatsu Akasaki (Nibutani).
- Bryn Apprill, Sarah Wiedenheft and Mikaela Krantz have previously worked together on Shomin Sample as Misaki Yamada, Aika Tenkubashi, and Reiko Arisugawa respectively.
- Star-Making Role: Along with Miss Kobayashi's Dragon Maid and Love Live! Sunshine!!, this was one of the anime that launched Sarah Wiedenheft to stardom.
- The Wiki Rule: Right here.
Trivia / Gonna Be the Twin-Tail!!