The episode's title is a reference to the C.S. Lewis novel 'The Lion, the Witch and the Wardrobe'. Dave Filoni has previously mentioned that 'The Chronicles of Narnia' was a major inspiration behind the World Between Worlds. Warwick Davis appeared in The Chronicles of Narnia: Prince Caspian (2008), Prince Caspian and the Voyage of the Dawn Treader (1989) and The Silver Chair (1990).