villain. She is described to be "As strict and severe as the worst storybook governess and ultimately quite as evil as any fairytale stepmother". Marcellus Pye Etheldredda's son, Marcellus is a renowned Alchemist, who has drunk the potion of immortality. He is over five hundred years old and lives in the Castle near Snake Slipway. When Septimus was sent back in time in Physik by Etheldredda, he became Marcellus' apprentice. While coming back to their own time, Septimus promised Marcellus to prepare a youth potion so that the present Marcellus regains his youth which he did. He seems to dislike having to interact with the outside world, as he understands so little of the modern time and prefers staying at home, though he is on good terms with Septimus and Jenna, who resembles his long gone sister Esmeralda. Critics found his character to be "not the quite good guy, yet not the quite bad guy either." Wolf Boy (Boy 409) Better known as Boy 409, he is a friend of Septimus from the Young Army who got almost drowned one night in an expedition to the Forest, and was left for dead. He was later adopted by wolverines, and left when he got too big. Septimus later met him in his brother's camps in the Forest, where he had been found and re-christened as Wolf Boy. He attempted to help Jenna find Septimus in Physik. He is currently apprenticed to Aunt Zelda and is in the process of becoming the first male Keeper. In Syren, he takes the test to become Keeper. At the Port Witch Coven, he discovers that he must feed Lucy Gringe to the Grim. The two manage to escape, but get tangled with some nefarious sailors. He gets along well with Lucy, except that he doesn't like her screaming. Later, when they meet Septimus, Jenna, and Beetle, he is wary at first. However, he becomes friends with Beetle. Aunt Zelda has grown extremely fond of him and is relieved to see him safe and sound at the end of Syren. In Darke, it is found out that his name is actually Mandy Marwick and he has two other brothers, Matt and Marcus. Lucy Gringe Lucy Gringe is Simon Heap's love interest. In Magyk the pair tried to marry, but the wedding was put off when Simon was dragged away by guards. She refused to believe that