He's the main character in A Christmas Carol.
I can't find a character named Walter in A Christmas Carol. However, a Walter appears in Dombey and Son.
There are over 100 versions of "A Christmas Carol" so you would have to be more specific.
Some movies that feature the character Ebenezer Scrooge include "A Christmas Carol" (1984) starring George C. Scott, "Scrooge" (1951) starring Alastair Sim, and "The Muppet Christmas Carol" (1992) with Michael Caine playing the role. These adaptations are based on Charles Dickens' classic novella "A Christmas Carol."
For many people the movie of The Snowman would be top of their list. A Christmas Carol is another perennial favourite. A Sesame Street Christmas Carol and A Muppets Christmas Carol are two others.
I found out that the themes are, Guilt and innocence and Wealth and poverty. Just search for themes of A Christmas Carol on Google and it will find lots of answers for you.
There are multiple places one can find information about the Christmas carol Holly and Ivy. One great website for information in Wikipedia. Other sites include Carols, You Tube, and Hymns and Carols of Christmas.
Fantasy Drama
Christmas dolls can be difficult to find at time. The best place to look is online at Amazon. If that doesn't suit you then the next best place is eBay.
Were you doing the Christmas Carol Quiz? Me to, and I couldn't find it.
The lyric "the stars in the night sky looked down where he lay" can be found in the Christmas carol "Away in a Manger."
Wikipedia is a great source for information about Dickens and his works. You can also Google "Dickens" and "A Christmas Carol" and get literally thousands of site that will summarize, explicate and criticize his works.