Powder container and image forming apparatus

A powder container includes a discharge port, and a container identifier shape portion that is provided on a front end surface of the powder container in an insertion direction and that has a function to identify a type of the powder container, where the insertion direction is a direction in which the container body is inserted and set in a main body of an image forming apparatus and which is parallel to a center line of the powder container. The powder container further includes a driven portion that interlocks with a first main-body interlocking portion of the image forming apparatus at the time of setting in the main body of the image forming apparatus, and an identifier opening group that starts to interlock with a second main-body interlocking portion of the image forming apparatus after the driven portion starts to interlock with the first main-body interlocking portion. A position of the identifier opening group relative to the driven portion in the circumferential direction varies depending on a type of the powder container to be identified.