The real Dr. Blowhole will appear in the future fic.
This can't be a coincidence that the Penguins archenemy is constantly mentioned in the every story. Plus, given how in The Odd Family Karl and Timo started constructing replica of him, who's to say that the evil dolphin himself will appear on the island of Madagascar, quite furious of the fact that someone impersonates him? In The Odd Family, Savio
will be defeated in the same way as in "The Terror Of Madagascar".But this time he will defeated by a adult fossa, namely Mary Ann, who will go full Mama Bear-mode when she will see that the boa wants to eat her adopted daughter. The Zoosters will get A Day in the Limelight story.
So far, the fics mostly focused on AHKJ characters, with Zoosters serving as supporting characters. However, there's a possibility that one of the future fics will have AHKJ characters (like Julien, Maurice, Karl, Timo, Mary Ann, Horst, Ted and etc.) being Demoted to Extra for some reasons, allowing Zoosters to shine in a story where they will be main characters, just like in the movies. Bruce will return.
Hearing that Julien and his crew undoned "his work" of breaking his little brother emotionally, he will return to Madagascar and kidnapp Julien with intention of killing him, just because he helped Karl overcome his trauma of losing Chauncey.