Hell Girl/Trivia
- Hey, It's That Guy! (the Live Action Adaptation features several actors from tokusatsu series in both regular and one-time roles. Kazuki Kato (Daisuke Kazama aka Kamen Rider Drake), Aya Sugimoto (Queen Beryl), Kanji Tsuda (Daisuke Okubo, the boss of ORE Journal), Masaya Matsukaze (Shun Namiki aka Mega Blue), Kazuhiko Nishimura (Jo Ohara aka Yellow Lion)... the list goes on.
- Hey, It's That Voice!: Other than Ai's voice below, a lot of seiyuus make guest appearances occasionally as either Ai's client, or those who got sent to Hell. Including Houko Kuwashima, Kaori Shimizu, Rie Tanaka, Jun Fukuyama, to name a few. Lastly, Magic Knight Rayearth fans will take note that Hikaru's seiyuu Hekiru Shiina, after a VERY LONG hiatus, makes a frequent voice work in the third season)
- Not that the main cast other than Ai (see below) doesn't invoke this. Masaya Matsukaze not only does Ren live-action, he does the voicing too. Hone-Onna has the same voice as Anko Mitarashi, while Wanyuudo sounds like Zangetsu.
- And Nana Mizuki, not typecast for once, as Tsugumi in all three seasons. No, she doesn't get to sing.
- Yuzuki is the drummer of the Light Music Club? We didn't expected it either.
- Noriaki Sugiyama gets dragged to hell in season one, but not before delivering some very Shirou-esque lines.
- Hey look! Maka's using the Hell Correspondence!
- Dr Honjo (episode four) is played by Takehito Koyasu. Excalibur gets sent to hell... interesting...
- The English dub has Honjo played by Vic Mignogna.
- The Wiki Rule: The Hell Girl Wiki.