clean, even in Coldharbour. Walter Walter is a giant whose task is to protect children. When Milo gives him his task, however, he says, "Protect them all, Walter". Walter takes this to mean that he must protect all the children of the world, which occasionally confuses him! Although he has extraordinary muscles, he has a friendly nature, and hasn't let the children down yet. Helen Helen is a girl who can read minds. She is so used to this ability that, when she is unable to read the minds of the Unearthers (they are being shielded from her by Carnac), she is confused and upset. She has occasionally delved into the mind of The Roar, and it has taken these opportunities to read her mind and find out the defensive plans for the planet. Helen is very lucky as she is the only child to have an adult relative in Coldharbour. In the third book, when The Roar moves the barrier while Helen's father is at a drop-off point, her father is trapped outside. Dad Helen's dad is very protective of his daughter, whose mother died when Helen was very young. He does everything that he can to prevent Helen being mixed up in this, but when he sees that she has to, he lets her, on the condition that he can be there too. We do not know his given name, as he is only called "Dad" in the series. For a long time he is the only adult in Coldharbour, as there is a barrier that stops adults from getting in, which was placed after Dad arrived there. The author reports that in the third book, Dad is suddenly left outside of Coldharbour. He was gathering food from one of the drop-off points when suddenly the barrier moved slightly, keeping him just outside the barrier surrounding the city. Jenny Jenny is Milo's sister. She seems able to see the future. At the end of Silver City, she uses the beauty given to her by Thomas to summon all the living things in the world to Coldharbour. In Silver World, she turns into a weapon against The Roar. Carnac Carnac is The Roar's son, who helped in the first fight between her and the Protector. He was left inside the world to grow, so that when he broke free he could take over the world and eat all its