It has to be loud, and I want it to be fun; otherwise, I'm not participating! Karlsson is someone very special and has been captivating young readers for decades. No wonder, because who wouldn't want to live on a roof, have a propeller on their back, and constantly play pranks? His best friend Lillebror is certainly thrilled with Karlsson. How great that Astrid Lindgren's novel is now available again as a paperback!.