List of characters who know Conan is Sleeping Kogoro

From Detective Conan Wiki
List of characters who know Conan is Sleeping Kogoro is a work in progress. This page is a work in progress. Please consider filling in the missing pieces if you are able.

People who know Conan is Sleeping Kogoro[edit]


Hiroshi Agasa[edit]

Hiroshi Agasa.jpg

He built the gadgets that Conan uses to perform the Sleeping Kogoro trick.

Heiji Hattori[edit]

Heiji Hattori.jpg

In his introduction case he gives Conan a drink of Baiju alcohol which turned Conan back to normal when Heiji wasn't looking, although he was too Ultra competitive to realize anything in that time, even if Kudo did not solve the case as himself.

In Heiji's second case Conan puts him to sleep to solve it. Heiji wakes up and realizes based on his knowledge of Conan how the Sleeping Kogoro trick works, and deduces that Conan is Shinichi.

To be truthful, he was suspicious of the trick even before, when Ran told him that her father has solved all of his cases recently that he has earned the nickname 'Sleeping Kogoro.'

He then took her outside the room, followed by Conan, and asked her, "Where is HE, when your father does his reasoning? When she asked him who he was talking about, he promptly and without hesitation lifted up Conan by the scruff of his clothes, and answered, "The little kid, who sticks to you like glue?"

She replied that he disappears, but sometimes in her father's deduction, he arrives from behind her father for some reason.

This was before the blackout, so it never was answered, but it does leave evidence that he suspected before he was tranquilized by Conan.

In fact, after Conan gave a major hint to solving the first case, he replied, "I'm an idiot. I do not know," forcing Conan to solve the cases instead.

As well as purposely withholding his own deduction, he forced Conan in the position of having to tranquilize him instead of Kogoro, when he quickly followed Conan to the next room, where he was quickly tranquilized in the doorway.

This allowed Conan to speak in his voice, however he is unable to replicate Hattori's Kansei-Ben Dialect, although he does a bad and strange impersonation of the dialect.

Hattori was really wanting proof, and would probably have missed it, if Kogoro, in a true Jerk moment, did not pound him on the head.

However, that did allow him to wake up, and to continue his sleeping act routine, where he managed to see Conan out of the corner of his eye, speaking in his own voice, but with a strange dialect, proving 2 things to himself:

1. Conan Edogawa is Shinichi Kudo
2. How the 'Sleeping Detective' trick works

Yukiko Kudo[edit]

Yukiko Kudo.jpg

Yukiko seems to be aware of the trick that Conan uses as Sleeping Kogoro, she also witnessed Conan solving a case on her behalf using the voice-changer bowtie to speak in her voice.

Yusaku Kudo[edit]

Yusaku Kudo.jpg

Yusaku knows Conan's Identity and also seems to be aware of the tranquiliser Watch and the voice-changer bowtie that Conan uses to create Sleeping Kogoro.

Ai Haibara/Shiho Miyano[edit]

Ai Haibara.jpgShiho Miyano.jpg

Because of prior knowledge of APTX due to being a member of the Black Organization, she already knows that Conan is a shrunken person. She moved in with Professor Agasa and has seen his gadgets. She has witnessed Conan perform Sleeping Kogoro several times.



Because of prior knowledge of APTX due to being a member of the Black Organization, and knowing the Miyano parents, she already knows that Conan is a shrunken person. Due to his proximity to Kogoro, it is likely that she would have figured out their connection instantly.

Kaito Kuroba/Kaitou Kid[edit]

Kaito Kuroba.jpgKaitou Kid.jpg

Kaito as Kaitou Kid witnessed Conan's trick several times when a case is occured and Kaito ends up being involved sometimes.

Eisuke Hondou[edit]

Eisuke Hondou.jpg

Eisuke had deduced that Conan was Sleeping Kogoro before they had even met. When he first saw Conan he directly introduced himself to Conan, who he refered to as Kogoro. Conan later reveals his identity as Shinichi to him.

Subaru Okiya/Shuichi Akai[edit]

Shuichi Akai.jpgSubaru Okiya.jpg

Subaru Okiya (revealed to be Shuichi Akai in The Scarlet Return) witnessed Conan's trick several times and got the final confirmation of Conan's identity in a similar way. He also helped Conan solving cases while he was using the voice-changing bowtie.

Masumi Sera[edit]

Masumi Sera.jpg

It is unknown what she knew at the beginning, but she seemed to know of Conan's trick of using a cell phone to disguise his voice as Shinichi. Recently she helped Conan perform the Sleeping Kogoro trick.

Mary Sera[edit]


Recently she helped Conan perform the Sleeping Kogoro trick.

Rumi Wakasa[edit]

Rumi Wakasa.jpg

During Volume 97, Rumi witnessed the Sleeping Kogoro trick when Conan used Yamamura to solve the case.


Kogoro Mouri[edit]

In the TV Station Murder Case, Kogoro became suspicious about Conan for a short time. He was invited to attend a television live show as a guest star. However, a murder occurred at the studio.

After finding out all the evidences, Conan lured Kogoro to a spare storage room, lying that Yoko Okino was in there. Just as usual, he decided to tranquilize Kogoro and used the man to solve the case.

Unfortunately, when Kogoro woke up, he began to question Conan about Yoko's whereabouts. He was also suspicious about the fact that whenever Conan tried to pull him outside, he always fell asleep right after. Kogoro angrily grabbed the boy's suit jacket and wanted to "clear things up".

Much to Conan's luck, Yoko Okino appeared for real and Kogoro completely lost his suspicions.

Ichikawa Ebizo XI[edit]

Ebizo Ichikawa XI.jpg

He appeared aware in Conan and Ebizo's Kabuki Jūhachiban Mystery that Conan was actually a detective, and kept calling him "Detective", as well as hinting in a car ride that he suspects that Conan was actually solving the cases and hiding behind Kogoro.

Jodie Starling[edit]

Jodie Starling.jpg

She knows about the Stun Gun Wrist Watch, and Voice Changing Bow Tie, and was aware Conan was the one doing the actual investigating since her introduction case. Any doubts about this should be immediately cleared up during the second case she was in, when she fully trusts Conan's plan and was clearly aware he was working on a way to resolve the situation from the beginning.

Andre Camel[edit]

Andre Camel.jpg

James Black[edit]

James Black.jpg

Rei Furuya[edit]

Rei Furuya.jpg

After the Tennis Murder case, Rei begins to suspect that Conan is using Kogoro as a puppet for his own deductions.

He has already seen how Kogoro perform as Sleeping Kogoro, but missed the trick prior to Conan being hit in the head with a tennis racket.

However, in that case, when Conan prepared his watch in order to tranquilize Kogoro, Bourbon bent down so that his eye would have been hit with the dart, if Conan did not stop himself in time, saying "The lid on my watch broke," before wandering slightly to the back.

Since Conan was unable to tranquilize Kogoro, he had to instead give hints throughout the entire deduction to Kogoro, such as "Ice Melts," and many more. When Kogoro's response showed his typical "that is stupid type" behavior, Rei backed up Conan's hints throughout the entire deduction, proving to himself, that the real brains of this operation is Conan. That is really when he began to investigate the real detective "Sleeping Kogoro," who he now knew to be Conan.

Bourbon also learned via a bug he implanted in Jodie's sleeve to eavesdrop on their conversation that Conan helped the FBI figuring out the Organisation's spy at the shrine.

Conan with a Disguised Bourbon in background

In the above picture in the episode of Jodie's Memories, when Conan was using Agasa for his deduction, Conan was standing behind Agasa. A disguised Bourbon was standing in front of the crowd, although he may have repositioned himself slightly to see Conan speaking behind a wide awake 'lip syncing" Agasa.

He told Vermouth that Conan is a terrifying man.

In the Scarlet episodes, he also figured out that Conan came up with the plan that Akai, Conan, and Kir used to fake Akai's death at the Pass, and added in his mind the part of Akai's sentence that was left off at the scene, stated that Conan predicted everything exactly as it happened at the scene.

However, he is unaware of the trick that Conan uses to create Sleeping Kogoro.

In the Heartstrap Case, he finally saw Conan use his Voice Changing Bow Tie as a Loudspeaker on a beach, however he has not yet seen him actually tranquilize anyone or speak in another voice in front of him yet, unless he saw him speak in Agasa's voice at the shrine.

Hyoue Kuroda[edit]

Hyoue Kuroda.jpg

Kuroda called him 'The Brain behind Sleeping Kogoro' and say that Conan has a ability to crack cases by seeing what no one else does. It seems that Kuroda is aware how good Conan is as a detective.

He was confident enough to believe that Conan could help with a case and order the police to do as he says. But it's not certain if he knows of the whole truth.

In Kawanakajima Murder Case, Anime: 810-812, which was his first appearance, he already knew that Conan was 'The Brain behind Sleeping Kogoro,' and stated an entire dialogue stating his knowledge of Edogawa Conan in front of the Nagano Police Officers present, in his first speech to Conan.

In Mystery of the Burning Tent Episode 909-910, He refers to Conan as "Sleeping Kogoro's Bag of Wisdom" to both: Ninzaburo Shiratori and Inspector Yuminaga.

In The Target is the Metropolitan Police Traffic Department Episode 971-974, he also instructed Bourbon to answer all of Conan's questions, when he realized that Conan was also investigating the case as well.

Kansuke Yamato[edit]

Kansuke Yamato.jpg

It is made apparent that he suspects Conan of being "the one leading everything" in A Dangerous Party of Two.

Yui Uehara[edit]

Yui Uehara.jpg

Kansuke Yamato told her that he suspects Conan of being "the one leading everything" in A Dangerous Party of Two.

Takaaki Morofushi[edit]

Taka'aki Morofushi.jpg


Hidemi Hondou.jpg

Miwako Sato[edit]

Miwako Sato.jpg

Ran Mouri[edit]

Ran Mouri.jpg

Inspector Goro Otaki[edit]

Goro Otaki.jpg

His involvement in both the Tiger Scroll Case and the Koshien Bomber case at the very least should make him suspicious and knowledgable that Conan is incredibly intelligent, as he does not question how or why Conan was so involved with both cases. Additionally, he has been around them long enough to reason he sees their detective skills as equal. Additionally, Conan makes little to no effort to hide it from him.

Probably Non-Canon[edit]

Lupin III[edit]

In the Special of Lupin III vs. Detective Conan, Lupin III, While disguised as Mouri Kogor, he even played the part of the wide-awake sleeping detective, after Conan accidently shot Koichi Zenigata with his stun gun tranquilizer, only for Zeniga to wake up 30 seconds later. However, Lupin frequently started ad-libbing while playing the sleeping detective. Needless to say, he knows how the trick works behind the sleeping Kogoro.