Honest Tarou

正直太郎

Truth Doll (正直太郎) (a.k.a. Blunt Taro or Honest Taro) is a gadget owned by Doraemon that looks like a normal doll. Doraemon brought out this gadget to help Nobita's uncle, Tamao, to ask out the woman he likes. (Source: Doraemon Wiki)