- Charles's treatment of Magwich is the result of him being a Loving Bully. It would explain why he always feels the need to mention (i.e. insult— think of it as "Have I Mentioned That I Hate Magwich Today?") him when he's not around and volunteer to keep an eye him, even when no one asks. Only, instead of dipping his pigtails in ink, he threatens to mutilate him with hedge clippers. It also helps that fate keeps forcing them to be together. Or maybe that's just mutual karma.
Caretakers of the Imaginarium Geographica since John, Jack and Charles
Exactly What It Says on the Tin
Samaranth's true name
Near the end of The First Dragon, Charles learns Samaranth's secret name... and, judging by the angel version's attitude and looks, i believe it may be Pit (Kid Icarus... someone please put in the link for me).