Heiji Hattori
- Name: Heiji Hattori
- Age: 17(?)
- Lives in: Osaka
- Known as: The High School Detective From the West
- Father: Henzon Hattori
- Mother: Shizuka Hattori
- Wears: The cap (all the time) When he turns the cap to the front, he starts his deductions.
- Hobbies: kendo.
- Favourite Author: Ellery Queen
- He seems to wear his school uniform to funerals a lot. (LOL)
- Appearences:
- File 2-7 of Volume 10 and Episode 48, 49.
- File 7-10 of Volume 12, File 1 of Volume 13 and Episode 57, 58.
- File 10 of Volume 15, File 1-3 of Volume 16 and Episode 77, 78.
- File 4-8 of Volume 25 and Episode 166-168.
- File 11 of Volume 25, File 1-4 of Volume 26 and Episode 189-191.
- Famous Quot: "We can see the importance of life only because it is short."
- He was friends with Katsuha every since they were little. (*kawaii*) (just like Shinichi and Ran)
- He wanted to compete with Shinichi Kudo at first. However after he lost to Shinichi, he started to realise the whole point of deduction is finding out the truth, not competing. He then discovered Conan's true identity, since then he's been like brother to Conan.
- He seems to be pretty lucky(?) most of the time. After all those scary moments (was hanging at the clif once, got shot once, been pushed into the ocean once...) and remarkably he's still alive.