What would be a good way to change, "One really cool character in the book is Ponyboy, the narrator," to make it better fit with the rest of the book report?

AOne really whack character in the book is Ponyboy, the narrator.

BOne really interesting character in the book is Ponyboy, the narrator.

COne really awesome character in the book is Ponyboy, the narrator.

DOne really weird character in the book is Ponyboy, the narrator.