URIAH HEEP (David Copperfield) - A hypocritical clerk of Mr Wickfields who is continually citing his humbleness. He deviously plans to ruin Wickfield but is later undone by Mister Micawber.
FAGIN (Oliver Twist) - A crafty old Jew who runs a thieves school near Field Lane in Saffron Hill. Oliver falls in with Fagin's band when he runs away from the undertaker Sowerberry.
FEZZIWIG (A Christmas Carol) - Scrooge was apprenticed to 'Old Fezziwig' in his youth. Scrooge visits his old employer with the 'Ghost of Christmas Past' and is reminded what a kind generous man he was.
Footnote
According to John R. Greenfield in his 'Dictionary of British Literary Characters', Dickens created 989 named characters during his career.
*************************