Meet Hazardous Harold

Harold Mitchell is nine years old. His mum describes him as "all elbows and knees"—which was a nice way of saying he was tall and gangling, and he tripped over his own feet at least three times a day. His light brown hair never stayed combed for more than five minutes, and his shoelaces had a magical ability to untie themselves whenever he wasn't looking.

A young boy with blond hair smiling in a cluttered room with books, magazines, LEGO bricks, and drawings on the walls.

His best friends Murphy and Mia say Harold is the king of last-minute ideas. His teacher, said he had "untapped potential" (which was teacher code for "could do better if he actually tried"). And his mum said he was "creatively spontaneous" (which pretty much meant he left everything until the last possible second).

But here's the thing: Harold always figured things out. Eventually. Usually. Well... most of the time.

Murphy a boyy with red hair and blue eyes smiling in front of the Sydney Opera House in Australia.

Murphy

Mia a  young girl with long red hair and blue eyes smiling in front of the Sydney Opera House in Australia.

Mia

A small dog with white and brown fur, wearing a black collar with bone-shaped decorations, sitting on a beige couch.

Spike, a Jack Russel Terrier, is Harold’s shadow and best buddy. Spike causes as much chaos as Harold.They are a perfect match.

Harold's mother with shoulder-length blonde hair, smiling, sitting on a beige couch in a warmly lit room.

Harold’s Mum

Harold's father with blonde hair wearing a light blue shirt, sitting in a room with a bookshelf and framed picture in the background.

Harold’s Dad

Close-up of a Harold boy with blonde hair and blue eyes, wearing a light gray shirt against a blurred green background.

How Harold Ages Across The Series

Harold Age 8

Books 1-6

Harold as a young teenage boy with blonde hair and blue eyes, wearing a gray collared shirt, looking at the camera with a slight smile, against a blurred green background.
Harold with light brown hair and blue eyes wearing a gray polo shirt, smiling softly.

Harold Age 12

Books 19-23

Harold Age 9

Books 7-12

Harold with light brown hair and blue eyes smiling outdoors on a sunny day, wearing a red polo shirt with white stripes.

Harold Age 10

Books 13-18

Young boy with blonde hair wearing a red polo shirt standing in front of the Sydney Opera House and harbor.

Harold Age 14

Books 24-29