Who are the main characters of the movie, "Much Ado About Nothing?"

The 1993 and 2012 film adaptations of William Shakespeare's play, Much Ado About Nothing, feature the same group of main characters. 

First, there are Benedick and Beatrice, who are both very full of themselves, think marriage to be silly, and seemingly hate one another. Then there is the beautiful Hero, cousin of Beatrice and daughter of Leonato. There are also two brothers, Don John (who is a jealous troublemaker) and Don Pedro (who likes to play at matchmaking). Benedick's friend Claudio is also a main character. Other figures in the plot include Margaret and Ursula (Hero's gentlewomen), Borachio and Conrade (Don John's cronies), Dogberry (a bumbling but charismatic constable), and a meddling Friar.

Throughout the course of the play, Don Pedro makes it his task to set up two couples. After successfully making a match of Hero and Claudio, for whom things do not go smoothly, he plays a long-game of making a match out of Benedick and Beatrice.