What is roll calls in illustration?

A roll call is a method of calling out the names of individuals to take attendance or to determine who is present or absent in a particular gathering, such as a meeting, class, or event. In illustration, roll calls may be depicted in drawings or cartoons as a way to communicate the presence or absence of certain characters within a scene. This is often done by showing a group of characters having their names called out, or a roster or list of names being checked off by a person keeping track of attendance. Roll calls may also be used as a literary device to convey themes of inclusion, exclusion, or conformity within a narrative.