A fourteenyearold boy in the city where Kiki settles. He is obsessed with aviation is a member of a club building a humanpowered aircraft and is at first intrigued only by Kikis ability to fly. He later becomes her friend although it is obvious that she awes him. It is not clear at least to an Englishspeaker whether quotKopoliquot is intended as a given name or family name. quotTomboquot according to the novel is a nickname Japanese for quotdragonflyquot.