The adventure Faction War tells the story of Factol Rowan Darkwood and his bid to take over Sigil. As part of this plot he is imprisoned in a Maze by the Lady of Pain, but his foresight allows his quick escape. Sure, Her Serenity still came out on top, but it made me wonder: Are there other canonical escapes from Her Mazes? Or is Darkwood unique?
Examples from adventures, novels, sourcebooks, and video games are welcome.