Hard at Work

J.R.R. Tolkien, C.S. Lewis, Charles Williams © James A. Owen

John (J.R.R. Tolkien) is the series protagonist. An ex-soldier, he becomes the Caretaker Principal of the Imaginarium Geographica after his tutor Stellan, the former Caretaker Principa, is killed. He makes up his own words sometimes, of which there is the word "eucatastrophe". At first, he does not know how to read the many languages in the Imaginarium Geographica, having not paid attention to Stellan's teachings, thinking the languages were not important, but slowly gains knowledge.
Jack (C.S. Lewis) is one of the three Caretakers. He is the youngest, having not yet attended university (Oxford). He is attracted to Aven. Early on he demonstrates the most imagination of the three, getting the companions out of sticky situations through inventive means. He loses his soul but regains it, though Captain Nemo loses his life because of Jack's recklessness. His nickname, Jack, was gained when Peter Pan whispered it into his ear when Jack was a child, during his sleep.
Charles (Charles Williams) is the third Caretaker. The eldest of them, he is an editor of the Oxford Press and more groundly rooted in reality. He takes a strong disliking to Magwich and on several occasions beats him and threatens to kill him. Charles calls Magwich "Maggot" to show his dislike for him. However, he is shown to have a soft spot for the badger Tummeler.

The Chronicles of the Imaginarium Geographica