The manga was followed by Penguin Musume Max, serialized in Champion Red from December 2007 to January 2010.

The story follows Sakura 'Penguin' Nankyoku and her friends Kujira Etorofu and Nene Kurio through their daily lives.

They are often corrupted by either Penguin herself, her economic rival Mary Whitebear, or other people who have interest in the Nankyoku family.

The opening theme is "Renai Jiyuu Shōjo♀" (恋愛自由少女♀, Romantic Free-loving Girls) by Azusa Kataoka, Mariya Ise, Yoshino Nanjou, Sakura Nogawa, Mai Kadowaki and Rina Hidaka.

For episodes 1-11, the ending theme is "Yurete Hajikete Afurechau☆Miwaku no Penguin Musume" (揺れてはじけてあふれちゃう☆魅惑のペンギン娘, Shake, Repel, Overflow☆Penguin Girl's Fascination) by Kataoka, Ise, Nanjou and Hidaka, whilst the ending theme for episodes 12-22 is "Yurayura + Yuriyura + Nanananaa" (ゆらゆら+ゆりゆら+ななななー) by Kataoka, Ise and Nanjou, the animation of which was produced by IOSYS.