Initially an unnamed mob character with several nicknames, she was eventually given the official name Kojima Emi. She was given a fan nickname Ritaiko (Ritai=Tank Treads, Ko=Girl) due to the frequency with which she has to change the tank treads during her appearance. She is also called Naoshita-san (直下さん) due to her quote "直したばっかりなのに! (I just fixed it!)".
