Only - I don't know how you saw condescension in that one-liner light-hearted post that ended in a smiley, but I spent the day on the beach and really can't get riled up now. Whatever was your problem last night, I hope you are having a better evening tonight.
All characters in JS & Mr N have different personalities and their complex motivations for the stuff they do. N is arguably somewhere on the autistic spectrum and has no sense of humour ("Mr Norrell knew there were such things as jokes in the world or people would not write about them in books, but had never actually been introduced to a joke or shaken its hand"). Childermass is worldly and efficient (Childermass knew the world. Childermass knew what games the children on street corners are playing - games that all other grown-ups have long since forgotten. Childermass knew what old people by firesides are thinking of, though no one has asked them in years... And all that Childermass knew made him smile; and some of what he knew made him laugh out loud; and none of what he knew wrung from him so much as ha'pennyworth of pity.").
JS wants to learn magic but has no books to learn from, as Mr N has jealously accumulated them all. He has no choice but to be N's apprentice, although they have very different personalities and opinions on the place of magic in the world. N wants JS around mainly because he has no one else to talk magic to and JS is sticking around because there is no one else he can learn magic from.
Gentleman With Thistle-Down Hair is a faery and the ruler of the Faerie kingdom of Lost Hope. He is fickle, quick to anger, and unwilling or unable to understand people's real feelings (of despair, for the most part). He was summoned by N to bring Emma back after she died and now conspires not only to keep her in his castle all night every night, but also to make Stephen Black the King of England.
JS and N lock horns on the subject of Raven King - JS thinks RK is the best magician ever & a man to be admired and followed, while N believes he is a traitor to the King of England and a troublemaker. Raven King has no part in the chain of events that make up the story, but he is a very important character in JS & Mr N. His story is told entirely in footnotes, through anecdotes, historical citations, quotes from books, and the occasional poem like this "well-known ballad" (about how Raven King used to abduct beautiful people to live in his castle in the Other Lands):
The Raven King
Not long, not long my father said
Not long shall you be ours
The Raven King knows all too well
Which are the fairest flowers
The priest was all too worldly
Though he prayed and rang his bell
The Raven King three candles lit
The priest said it was well
Her arms were all too feeble
Though she claimed to love me so
The Raven King stretched out his hand
She sighed and let me go
This land is all too shallow
It is painted on the sky
And trembles like the wind-shook rain
When the Raven King goes by
For always and for always
I pray remember me
Upon the moors, beneath the stars
With the King’s wild company