One of the coolest aspects about Fairy Tail is its plethora of awesome female characters. Many of the best shonen series focus primarily on male characters, but the amazing women in Fairy Tail help to challenge this trope. While standard shonen series might alienate female fans of the genre who want to see themselves represented, Fairy Tail offers plenty of badass women and girls to populate its story.
That said, who is the best female character in Fairy Tail? This depends on your personal preferences. Do you like powerful badasses with serious demeanors? Then Erza Scarlet might be a favorite of yours. Do you believe all the best female characters are cats? You probably have a huge soft spot for Carla - and likely Millianna, too. No matter what your taste is, Fairy Tail is full of awesome ladies to be your fave.
Erza Scarlet is a core member of Team Natsu. She has a fearsome, serious personality, but is also extremely loyal toward her comrades. Erza possesses many abilities, but her most unique one is Requip, which allows her to rapidly swap out armor and weaponry during battle.
Because of her ability, Satan Soul, which allows her to control the bodies of demons, Mirajane Strauss has trouble thinking of herself as fully human. These complex feelings about her abilities initially make her super aggressive. As she gets more comfortable with herself and sees how her skills prove beneficial, she adopts a kinder, more relaxed attitude.
Mavis Vermilion founded the Fairy Tail guild. Mavis interacts with the rest of the guild via her psychic abilities even though her body has been in a coma for decades. At age 13, she used Grand Magic to save guild co-founder Yuri Dreyar's life, and as a result, her body stopped aging. Technically, Mavis is 118 years old, but sometimes acts like a cheerful little girl.
Cana Alberona is an S-Class mage and the daughter of Gildarts Clive. For the most part, she's quite serious about fulfilling the goals of the Fairy Tail guild - except when she drinks. Cana loves alcohol and has such a high tolerance for it that she has to practically marinate her liver in the stuff to get drunk.