Totoro Is A Gender Neutral Name Of Japanese Origin. This Name Was Made Famous By Studio Ghiblis My Neighbor Totoro. However, Its Meaning Comes From The Name "Tororo" Which Is Defined As "troll". The Reason It Is Called Totoro Throughout The Movie Is Because Of The Adorable Little Mei Who Mispronounces "Tororo", Subsequently Renaming The Lovely Spirit In Her Back Garden.