| Spoiler warning! This article contains plot details from the latest book. |
Sir Astin is Sophie's Level Two Universe teacher at Foxfire. He has light blond hair and a quiet, whispery voice. When Sophie was assigned a star-mapping project, and she bottled the light of an unmapped star, Elementine. Sir Astin was shocked. He tells Sophie that it is is made of Quintessince, the fifth element, and that she should hold still while he thinks of what to do. Eventually, Foxfire is evacuated, and Sophie must attend a tribunal because she has broken a serious law - one she did not know that existed. At the tribunal, Sir Astin testifies that her list of stars were assigned randomly and the pattern was metallics. He said that he had no idea how she came up with an unmapped star, and that he knows nothing about Elementine except for its name. Sir Astin gives Sophie a hundred percent at her final tribunal in book one because she has the stars memorized.
In book four, Mr. Forkle reveals that Sir Astin is one of his identities, in order to gain Sophie's trust.