Matthew is a young man faring from The City, an organization that opposes the status quo of Moebius. He is an honest and caring young man who is searching for his missing sister Nael/Niall.

Some of these characters have appeared in Digimon Story entries before. For example, Dianamon and Merukimon both showed up in the two Cyber Sleuth games ahead of this new Digimon Story.