Is the monster in the book monster calls real?

In "A Monster Calls" by Patrick Ness, the monster represents Conor's emotional struggles and the complexities of grief rather than a literal creature. While the monster appears physically in the story, it serves as a manifestation of Conor's inner turmoil as he grApples with his mother's illness and his feelings of loss. Thus, the monster is not real in a conventional sense, but it embodies the very real challenges and fears he faces.