Royal Penguin/Manga

Canonicity
It is not known if Royal Penguin was originally intended to be a member PPP or not in the old canon. She appears with them in the Chapter 17 cover art, depicted in a very prominent and central way, but does not appear with them when all four known members gather to watch the singing performance of Crested Ibis in the final scene of this chapter.

In the new canon established by the Kemono Friends anime, the only generation of PPP to have a Royal Penguin member is the current generation as mentioned by Royal Penguin's anime counterpart Princess, in Episode 8. If Royal Penguin was intended to be apart of PPP in the manga, it has since been retconned by these events.

This Friend may also have been added to the manga retroactively in the first printing of Volume Two, in anticipation of the appearance of Royal Penguin in the anime, 18 days later.