Up until the departure of Acchan, the group always had a Center. As Yuuko explains to Nagisa and Chieri, on their day off, the position was retired after Acchan's departure due to the rampant rumors that flew fast after Acchan disappeared. Yuuko also explains that the Center Nova position was retired once Mariko Shinoda the 7th graduated and joined the administration. This occurred after Acchan's disappearance.
It was later revealed in episode 12 (Next Stage) that the idols are warped to a theatre where they perform and create the songs that are then sung by the members of the AKB0048. However, for those who did not acquire the true Center Nova spirit are stuck in a state of limbo; unable to return and unable to ascend to the top.
Known AKB0048 Members Who Held Center Nova (Ordered from Earliest to Latest)
- Minami Minegishi(Mii-chan) the 5th - In Episode 5, Yuuko says she has been sighted on another planet, Atamistar, and is later found on Atamistar taking gravure pictures for AKB0048.
- Atsuko Maeda (Acchan) the 13th
- Chieri Sono - Despite not being a successor, she becomes Center Nova in the last episode of the series.