The character Donald Duck has appeared in two Disney movies, which one has more grossing?
Donald Duck is the main character of the movie which refers to hero = 'Donald Duck'; which one has more grossing refers to movie_title where MAX(total_gross);
SELECT T1.movie_title FROM movies_total_gross AS T1 INNER JOIN characters AS T2 ON T1.movie_title = T2.movie_title WHERE T2.hero = 'Donald Duck' ORDER BY CAST(REPLACE(SUBSTR(total_gross, 2), ',', '') AS REAL) DESC LIMIT 1