Preditctions of new characters or returning characters for Untitled Garfield Nickelodeon Series

Since Untitled Nickeloden Garfield series has become a hot topic since August 2019. Of course they will add some new characters for the show and probably added some of old characters from previous cartoon adaptations into the new show. Who are the one that will retun and what kind of new characters that we will get for this new Nickelodeon Garfield series?