Castanova is one of the famous playwriters in all of Bird Island
Angry Birds Comics Edit
Monsters and Mistletoe - The Journal Edit
Castanova was walking around Bird Island with Hal interviewing him, saying it is an honor to interview him, and asks how does he get his ideas for his famous playwrights. Castanova explains that he jots down his "flight of fancy", "whirls of inspiration", and his wildest ideas in his journal, but suddenly, the wind blew his journal away to an unknown destination......
- On his journal, there is an in-joke where on the bottom where the author usually goes, it has the abbreviations of ABM, which stands for Angry Birds Movie, referencing The Angry Birds Movie universe it is set in.