Real name: Kudo Shinichi. Shrunk in size. His actual age is 18, but his current physical age is 8. A massive Sherlock Holmes fan who supposedly only reads Sherlock Holmes books. Has a serious personality. IQ 400. A boy attending Teitan Elementary School.

Maintains a gentle smile and a composed, relaxed demeanor without getting flustered. Very polite. Currently residing in this mansion. When he had nowhere to go, Conan suggested, "Why don't you live at our place?" and Yukiko and Yusaku agreed, so he has lived here ever since. Notably, he was originally bad at cooking, but he became quite skilled thanks to Yukiko's lessons. A 27-year-old male graduate student.

Conan's mother. She was a world-famous actress but retired after marriage. Possesses an active, lively, and cheerful personality. Very positive. Uses polite speech with Subaru. Said to be exceptionally skilled in the art of disguise.

A world-renowned mystery novelist. Conan's father. His deductive reasoning skills are extraordinary, presumed to be even greater than Conan's.