Boss is a small, orange and white dog of an unknown breed. He has pointy ears and dark eyes. Most notably, he wears a striped sweater adorned with the writing "Dragons", relating to how he was the mascot of the Megasaki Dragons baseball team.
Little is known about Boss' origins other than he was the mascot for the Megasaki Dragons.
Due to the baseball team being called the Megasaki Dragons, it is unclear why Boss is the team mascot due to being a dog.