cleaning robot
Type of robots in ToAru Majutsu no Index series.
A Cleaning Robot is an automated cylindrical machine designed to clean the grounds of Academy City. It can be described as a mobile trashbin.
It can be found all over and only in Academy City. Like the Security robot, it is cylindrical in shape, and with it, it is one of the most noticeable features of the scientific advancement of the city. The cleaning robot is prominently used by Tsuchimikado Maika, who can often be found riding on top of one and controlling it.