Disguise

Many cases and arcs involve the use of a disguise.

Characters who specialize in disguise

Many of the characters who specialize in disguise studied on a magician, and many magicians in Detective Conan also have disguise abilities.

Vermouth

Chris revealing her true identity.

Vermouth, also known as Sharon Vineyard, is a specialist disguiser who studied under Toichi Kuroba. Her skills in impersonating other people is remarkably invincible. Her disguise ability was first shown in the episode 230 (The Mysterious Passenger), when she was shown dressed as a waiter, provoking both Gin and Vodka.

Kaitou Kid

Kaito Kuroba is a son of the famous magician Toichi Kuroba. His ability to impersonate other people is most likely to be inherited from his father.

Yukiko Kudo

Yukiko in her normal disguise form.

Shinichi's mother, Yukiko also used to study with Toichi Kuroba. Her ability in disguise is not as good as much as Vermouth and Kaito.

Detective Conan vs. real world disguise

In real world, creating a facial mask may be possible, but trying to impersonate other people and not to mention in a short amount of time is more likely impossible. In Detective Conan, Vermouth and Kaitou Kid seems to change themselves really quickly (and easily) unlike Yukiko who had 7 hours of time to dress Heiji and Conan.