Princess is already in singular form. To make something posessive, you need to add either 's or '. Since the last letter of "princess" is an "s" the answer would be princess'.
Answer:They are both two sides of the same coin - two individuals who, because of a horrible day in their lives, became insane and decided to take on the world and make it in their image.
Explanation: Batman and Joker are fighting an ideological battle for each other's soul. They are both two sides of the same coin - two individuals who, because of a horrible day in their lives, became insane and decided to take on the world and make it in their image.
