This has to do something about DC OVA 6. During that time as I was watching the OVA, the criminal sounded just like Hattori Heiji. But, I finally got to handle the DIFFERENCES BETWEEN HATTORI AND HIS IMPOSTOR. Here are the clues:
1. Doesn't use the standard Japanese accent. As what I have said, Hattori uses the Kansai-ben language but, his impostor uses the standard Japanese accent.
2. Calls Conan, "Kudo". Usually, Conan picks up the Detective Agency's phone. Whenever he says, "Hello?", Hattori always (or sometimes) says, "Ah! Kudo" but his impostor didn't recognized Conan.
3. The subtitles. Heheh....

NOT THE REAL CHARACTERS BUT COSPLAY OF THEM IN THIS MANGA IN A EXTRA CHAPATER AND IT SOOO CUTE SEE IT NOW.IT TRUE NO ONE FANMADE IT, GET LOVE IS A MANGA BOOK THAT STILL ONGOING. I WAS REALLY HAPPY TO SEE THIS YEAH.also conan made another appearance in anime show , it not inuyasha it another anime i forgot the name.now i remember it called

Hayate no Gotoku there a part where he is cleaning the room it comes out super clean.if you look a the at the model it look like conan.if you want to know about the show here a summary

Hayate no Gotoku :Hayate Ayasaki is an unlucky teenager who worked since...