Wordplay has an extra letter
8a Performed shuffling 30's dance bent down under pressure (6) ?AG?ED extra letter will be H (not sure if it's relevant but answer to 30 is clog)
24d Dresser, arguing in Alaska about energy (6) DE?K?R
Grid completed.. Cannot find the fifth character who joins and needs to be shaded. Help would be most appreciated. Have 4 characters in missing clue numbers also name of game, Searched novels but did not come up with anything except Christopher Robin which is nowhere to be seen. Many thanks in advance.
I think that the inventor of the game is one of the 5 characters. Look carefully at the full title of Chapter 6 of the relevant book and that will give you the solution you want