Although Mr. Tim is not seen in the game, he is mentioned by many characters. He is the head of Peach FM. He lost his wallet near the entrance of Peach FM. If you return it to a police officer, they will take it from you and Mr. Tim will send you a thank you e-mail once you have a garage.
If you re-enter the police station, the policeman will say that Mr. Tim wanted you to have a voucher for a peach doll as a reward. The statue in My City was donated by Mr. Tim and is probably an advertisement for Peach FM because it is of a giant peach.