Usagi Tsukino (known as Serena Tsukino in the English dub, as well as Bunny in many other countries) is the reincarnation form of Princess Serenity. A carefree schoolgirl, she can transform herself into Sailor Moon, leader of the series' primary heroines, the Sailor Senshi. She is the love interest of Mamoru Chiba.
Sailor Moon is the main protagonist of the Sailor Moon series. Her civilian identity is Usagi Tsukino ("Serena Tsukino" in the English dub, and "Bunny" in many other countries). She was the first Senshi to be awakened by the moon cat Luna, the second Senshi to be awakened (Sailor Venus was the first), and is the only character to appear in every episode of the series. Over the course of the series, she grew from a frightened heroine unsure of herself and her abilities into a brave fighter for love and justice.In all versions of the series, she referred to herself as the "Sailor-Suited Pretty Girl Soldier of Love and Justice" (愛と正義のセーラー服美少女戦士). In the English dub, she instead referred to herself as the Champion of Justice. In the manga, she was also entitled "Soldier of Mystery" (神秘の戦士) by Neo-Queen Serenity. She is the soldier of Love and Justice.