the Ghost of Sir Herbert Dungeonstone ((Dragon Slayers' Academy, No.12)

What are those strange noises coming from the dungeon at DSA? Wiglaf and his stalwart cohorts Angus and Erica decide to investigate and inadvertently free the long-imprisoned ghost of the school founder?Sir Herbert Dungeonstone. Overjoyed to be on the loose again, Sir Herbert wreaks havoc, threatening to spoil the greedy headmaster?s plan to turn DSA coed.