I'm struggling with 19a - does anyone have a hint as to the nature of the comic character - are we talking a children's comic or a character from a film? Given the fact we have no letters to go on it is all a bit ethereal although I have an idea what the replacement word must be although how it fits into a set I cannot yet see.
I've "completed" the grid, have all the alternative entries and the 10 redundant clue words.
Have now been grid staring for ages.
Could anyone give me a nudge as to the hidden word and instruction please.