Original sentence: Steerpike, however, is in reality a dangerous traitor to Gormenghast who seeks to eventually wield ultimate power in the castle
Edited sentence: An important sub-plot involves Titus at school, where he encounters the school professors, especially Bellgrove, one of Titus's teachers, who eventually ascends to Headmaster of Gormenghast.At heart he is kindly, and if weak, at least has the humility to be aware of his faults.Bellgrove also begins a rather unusual romance with Irma Prunesquallor (sister of the castle's doctor), which makes a welcome humorous interlude in the novel.He becomes something of a father figure to Titus.However, deep inside him there is a certain element of dignity and nobility.In many respects, Bellgrove is the standard absent-minded professor who falls asleep during his own class and plays with marbles.Steerpike, despite his position of authority, is in reality a dangerous traitor to Gormenghast who seeks to eventually wield ultimate power in the castle