[original concept] by Roger Hargreaves ; written and illustrated by Adam Hargreaves. original concept by Roger Hargreaves ; written and illustrated by Adam Hargreaves. originated by Roger Hargreaves ; written and illustrated by Adam Hargreaves. original concept by Roger Hargreaves ; illustrated and written by Adam Hargreaves. written by Roger Hargreaves, illustrated by Adam Hargreaves. Roger Hargreaves ; [illustrated by Adam Hargreaves]. [original concept, design and illustration by Dan Green [original concept, design and illustration by Dan Green] original concept, design and illustration by Dan Green