The Shaggedy is a monster who appeared in the book Here Comes the Shaggedy.
He has the capability to fight other monsters, possibly deeming him super-strong.
Whenever it is summoned by someone, The Shaggedy will do whatever the person commands it to do and it will always help its "master" out when he or she is in trouble. It has also been determined to not let anyone else find out about it and lead a normal life, which is why it became the two boys, Zeke and Decker. The Shaggedy would only attack anyone if they posed as a threat to him.
The Shaggedy is a massive creature with reptilian skin, red eyes and dirty water, mud and twigs hanging. As Zeke and Decker, the two boys it becomes pose as twelve years old, Caucasian, short and chubby with blond hair and blue eyes.