Conversation so far:
What are some of Charles Dickens' characters?
The likes of Ebenezer Scrooge, Tiny Tim, Jacob Marley, Bob Cratchit, Oliver Twist, The Artful Dodger, Fagin, Bill Sikes, Pip, Miss Havisham.
What was Ebenezer Scrooge like?
a scrooge, for example, is a miser - or someone who dislikes Christmas festivity.
What book was he from?
CANNOTANSWER.
What was Oliver Twist like?
CANNOTANSWER.

Question: What can you tell me about his characters?
Self-contained rewrite: What can you tell me about Charles Dickens characters?