Billy abuses Grim 's magical and supernatural powers as much as Mandy .
Billy treats Grim with much more fairness , generosity , and kindness , resulting in Grim actually caring and liking Billy .
Although Billy abuses Grim 's magical and supernatural powers as much as Mandy , Billy treats Grim with much more fairness , generosity , and kindness , resulting in Grim actually caring and liking Billy .