1. A robot comprising: a first sensor unit configured to generate first sensor data indicative of a first portion of a moving body over a first plurality of times; a second sensor unit configured to generate second sensor data indicative of a second portion of the moving body over a second plurality of times; and a processor configured to: detect motion of the moving body based at least on the first sensor data at a first time of the first plurality of times and the first sensor data at a second time of the first plurality of times; determine that the moving body comprises a continuous form from at least the first sensor data and the second sensor data; detect at least one characteristic of the moving body that is indicative of the moving body comprising a person from at least one of the first sensor data and the second sensor data; identify the moving body as a person based at least on the detected at least one characteristic and the determination that the moving body comprises the continuous form; and perform an action in response to the identification of the moving body as a person.