Kogoro Mouri

Ran's dad, he is a private detective (ex-police). Like father like daughter, he is a great Judo-ka player. He is a clumsy and stupid detective but becomes a very famous detective (in fact, Conan solves all his cases).
Since Shinichi shrink into a kid, he uses Kogorou's body to solve cases because he is an ABSOLUTE DUMB for a detective. At last, Kogorou takes all the credits, he becomes a famous detective, and everything goes under Conan's plan.