What was the character that Dan Castellaneta did the voice over for and was awarded?
voice over for and was awarded refers to award like '%Voice-Over%';
SELECT DISTINCT T2.character FROM Award AS T1 INNER JOIN Character_Award AS T2 ON T1.award_id = T2.award_id WHERE T1.award LIKE '%Voice-Over%' AND T1.person = 'Dan Castellaneta';