Nicko Heap

This article catalogs the key characters from the books in the Septimus Heap series by Angie Sage. These include the books Magyk, Flyte, Physik, Queste, Syren, Darke, and Fyre. Some characters play a central role in all the books, while others are only central to the plot in one or two of the books. When reviewing the first book in the series, Magyk, Sabina Qazi of Dawn.com described the characters as follows:

These characters remind us of the different types of people around us. Sage separates the qualities that make us who we are and typecasts them into these roles. The good and the bad characteristics are accompanied by the dull and the intelligent, the silly with the mature and the unapproachable with the loving. But this doesn’t mean that her characters are not well-rounded people. They are, but by highlighting certain aspects of their personality, she makes it easy for the reader to think of real people in terms of these characters. Thus an evil principal becomes the necromancer, the dead queen loved grandparent, Septimus as the most intelligent but quiet boy in class and Jenna, perhaps, as the new best friend in the neighbourhood" - Dawn.com

The Heaps are the main characters in the series. Although the story revolves mainly around the protagonist Septimus and his sister Jenna, the whole family comes together in the adventures. They are a heap of Heaps.

Silas is the father of the Heap household. He is an Ordinary Wizard with wizard green eyes, curly hair and wears the traditional blue cloak of Ordinary Wizards. Silas was apprenticed to former ExtraOrdinary Wizard Alther Mella but left his apprenticeship, thus losing the title to Marcia Overstrand. He loves his family and is on terms with everybody except with Marcia. Silas loves to play Counter Feet with the gate-keeper of the Castle, Gringe. His addiction to the game makes him forget more important things like his family. He was responsible for accidentally releasing the spirit of Queen Etheldredda in Physik.

Sarah is the mother of the Heap household. She has the witch-like blue eyes and fair curly hair of the Heap family. She studied with the Physik woman, Galen, about Magykal herbs and plants and it was there that Silas Heap met her while getting lost in the forest one day. Sarah, though she is loving and caring in nature, is somewhat forgetful and sometimes more concerned about other things rather than the well-being of her near ones. Sarah has learned Physik and can also do some Magyk. Like Silas she is on good terms generally with everybody, except Marcia.

...
Wikipedia