Dick Gumshoe is a homicide detective at the police department in Tokyo. He generally takes care of the initial investigation, and is usually the first to take the stand during a trial to testify and give basic facts about a case.

Ryo is called the " City Hunter "; a sweeper or private detective.

He is a tall and well-built individual who is usually seen with a light blazer over a red t-shirt with rolled sleeves and dark pants, though he could take on a different appearance when necessary. He has slightly tousled hair that reaches his neck and handsome features.

His interests include Nanpa, erotic books and videos. He eats mostly anything and is quite a big eater as well. He also enjoys shooting games at the game center. He smokes 'Lucky Strike' brand of cigarettes and is quite a heavy drinker. He is aerophobic(in travel only) which is most probably attributed to his previous experience with planes. His favourite car is the Mini, Fiat Panda, and the Honda CR-X(first generation)

Inspector Chelmey is gruff and rather unfeeling, although he does show mild affection to his second, Barton. He also loves his wife, Amelie; proved by Barton's comment that he'd never seen a man more in love with his wife than Inspector Chelmey.

Chelmey takes pride in his job, and is definitely dedicated to being an inspector. He has demonstrated great talent in analytical thinking, although his habit of jumping to conclusions often leads to him being outdone by Professor Layton.

Taichi Hiraga-Keaton is the son of Japanese zoologist Taihei Hiraga and well-born Englishwoman Patricia Keaton. Keaton's parents separated when he was five, and young Taichi moved back to England with his mother. As an adult, he studied archeology at Oxford University, in part under the tutelage of Professor Yuri Scott.

After leaving Oxford, Keaton joined the British Army and became a member of the SAS, reaching the rank of master sergeant and seeing combat in the Falklands War and as one of the team members that responded to the Iranian Embassy incident.

His combat training serves him in good stead as an insurance investigator for the prestigious Lloyd's of London where he is known for his abilities and his unorthodox methods of investigation.

In addition to his work for Lloyd's, Keaton and his friend Daniel O'Connell operate their own insurance investigation agency headquartered in London. Even though Keaton is fairly successful as an insurance investigator, his dream is to continue his archaeological research into the possible origins of an ancient European civilization in the Danube River basin.

Just like his original incarnation, he has a genius intellect and is extremely knowledgeable in multiple fields.

He keeps a cool and logical head despite the situation. Unlike his original incarnation, his only drug habit is smoking a tobacco pipe. He keeps his apartment a mess and is regularly conducting chemical experiments that lead to clouds of noxious fumes. He also seems to have feelings for Mrs. Hudson.

Heiji is the son of Heizo Hattori, chief of the Osaka Police Department, and his wife Shizuka Hattori. Heiji wants to become a detective, and his father is very supportive of this, helping him solve tough cases. However, his father has given him tough love, though mostly for the sole purpose of having Heiji get him to bring a suspect out. Heiji is also very skilled in kendo and has become a favored tournament contender for his school.

Even while solving a case, Heiji tends to be lighthearted and good-humored, preferring to work through it with a grin on his face. He is a big fan of baseball, and is most of the time shown wearing an Osaka cap, to support the local Osaka baseball team.

Toshio always dreamed of being a police detective even when in high school, and upon graduation from Academy was assigned to the Inunaki ("Crying Dog") District Police Station in the heart of Tokyo.

While Toshio has wanted to marry Hitomi, he has vowed not to until he has captured the Cat's Eye (he has however made the first step and proposed to her).

While a bit clumsy and not very good at finding clues, his dogged determination and unyielding persistence has impressed his supervisors. He is however very stubborn and gets into verbal fights with his Chief constantly. Toshio doesn't carry a gun and prefers to use his wits and fists to contend with criminals. He has a weakness for beautiful women (especially blondes) and constantly makes Hitomi jealous.

Inspector Zenigata hails from Japan, city of origin unknown. He left the Japanese Police Force in favor of enlisting in ICPO (Interpol) for the sake of specifically bringing Lupin III to justice.

Zenigata appears to be in good physical shape, and has shown proficiency in Judo and Karate, able to dispatch multiple attackers with minimal effort. He's also capable with a jitte, the traditional Japanese police weapon designed to counterattacks with a sword. He is also quite the accurate shot with his gun, a Colt .45 pistol, and an almost inhuman skill with handcuffs, which he throws in a bola-like manner at his prey.

Sherlock Holmes is a legendary English detective known for his rapid-fire abductive reasoning.

Visiting Japan during the end of he Meiji period, he ultimately befriends Ry?nosuke Naruhod?, the ancestor of renowned lawyer Phoenix Wright. Several times throughout the Naruhodo's cases, he accompanies him to various crime scenes. Then, when he thinks he has discovered a capital clue, he shows off his deductive reasoning skills in a step-by-step breakdown of some key aspect of the crime or the suspect’s hidden motives.

There’s just one problem: He’s always wrong.

Conan Edogawa is the alias used by renowned teenage detective Shinichi Kudo in his shrunken form.

Shinichi took the appearance of his six or seven year old self after being exposed to a prototype poison called APTX 4869, which he had been forced to swallow by two members of the Black Organization.

The poison de-aged Shinichi's entire body except for his nervous system and therefore he still has the personality, memories, and incredible deductive ability of his teenage self.

Conan's goal is to hunt down the Black Organization and have them arrested for their crimes, as well as find an antidote to the APTX 4869. To do so he plans to make the washout detective Kogoro Mouri famous in hopes of attracting cases related to the Black Organization.

In the ecologically-minded city of Futo, where nearly everything is powered by windmills, the people live in harmony.

However, the Sonozaki Family sell mysterious devices resembling USB flash drives called Gaia Memories to criminals and other interested parties who use them to become monsters called Dopants, committing crimes with the police force powerless to stop them. To make matters worse, the Gaia Memories carry a dangerous toxin that cause their users to go insane to the point where they could die from the life-threatening devices.

After the death of his boss, the self-proclaimed hard-boiled (actually half-boiled) detective Shotaro Hidari works with the mysterious Philip, who possesses the true Gaia Memory, to investigate crimes which involve Dopants.

Using their own Gaia Memories, Shotaro and Philip use the Double Driver belts to transform and combine into Kamen Rider Double to fight the Dopant menace and keep Futo safe.