Erza is a one of the most powerful wizards in the anime fairy tail. She is also one of the main characters in the plot and is part of the main team, team Natsu. She uses Requip magic which means she changes her armor type.
Erza has the character trait's of a leader. She's often strict and criticizes anyone with bad behavior making people often apologize so they won't atagonize her. Those are her public persona but if you were close with her you would know that from time to time Erza is strong in character and when she's battling she is someone most people look up to and admire, even the guild master markarov has alot of respects for erza. Erza greatly favors cake and other sweets and likes wearing cute armor. One time Ezra had ordered 30 cakes-she kept 29 for herself and one for the guild. While shopping for new armor she had bought a cat women costume.