Toph

She is an earthbending master, one of the most powerful of her time, and the discoverer of metalbending. Blind since birth, Toph was constantly treated condescendingly because of her visual impairment, particularly by her overprotective parents, Lao and Poppy Beifong. Upon discovering badgermoles, earthbending animals who are also blind, she learned how to use earthbending as an extension of her senses. This gave her the ability to "see" every vibration that passes through the ground.

Having developed her own unique style of earthbending, Toph acquired a toughened personality and became famous for winning underground earthbending tournaments under the alias "The Blind Bandit", doing so behind her parents' backs. Although initially uninterested in directly aiding the war effort, she eventually chose to leave behind her old life, and travel with Avatar Aang and his friends as his earthbending teacher, when her parents finally became unbearable for her. Toph's total mastery over earthbending, unique personality, and thoughtful pragmatism made her a valuable addition to the team.

Due to her blindness, Toph was often pampered by her overprotective parents. Her freedom was limited to the point where her own existence was not known to most people in her hometown, much to her chagrin, thus straining her relationship with her parents. As a result, she greatly craved to interact with the rest of the world, albeit independently. It was not until she learned earthbending from the badgermoles that her confidence tremendously increased. As a result, she secretly participated in Earth Rumble tournaments without her parent's knowledge.

Upon joining Team Avatar, Toph brought a completely new personality to the group. Unlike the nurturing Katara, flighty Aang, or gruff but goofy Sokka, Toph was fiercely independent, sarcastic, direct, stubborn, and confrontational. She appeared to have the same carefree and adventurous personality as Aang and was very tomboyish in the way she acted and dressed, in contrast to the delicate doll her parents saw her as. Toph loved battling and took great pride in her earthbending skills. She appeared eager to prove that she was as strong as anyone who could see and once claimed that she was "the greatest earthbender in the world". This attitude was most prominently shown when she was teaching Aang earthbending, as she taught him to face his enemies and problems head-on.

Toph's eagerness to prove that she could be independent led to some initial difficulties with Aang and his friends. Toph insisted that she could "carry her own weight" and often mistook a simple friendly gesture as an act of pity for her blindness. Her encounter with Iroh, however, taught her that Aang, Katara, and Sokka cared for her because they were friends, not because her blindness made them feel obligated to do so.

Toph was often brutally honest when criticizing others, especially her friends. She was vocal about her opinions on others regardless of status (the Avatar, Aang) or age (Iroh). Her occasional attitude or aloofness is likely related to her being the only child of one of the richest families in the Earth Kingdom. Due to her time as a competitor and champion of earthbending tournaments, she was an expert in verbally taunting and insulting her opponents and, on occasion, her friends, particularly Sokka. She revealed to Katara that, being unable to see what she looks like, she did not feel the need to fuss over her appearance. However, despite her many quirks, Toph showed that she was a quick learner, and her courage and loyalty to her new friends seemed very stable.

One of Toph's most profound traits involved personal hygiene. She was accustomed to lying on the ground and walking everywhere barefoot leaving her soles soiled, a habit common among the earthbenders. Also, she had been seen belching loudly, picking her nose or toes, spitting, and was usually covered in dirt or, as she called it, "a healthy coating of earth".

Toph was well-educated in the manners and bearings of high society but deliberately chose to ignore them.

Toph did not let her blindness hurt her self-confidence. She had high self-esteem in regard to many of her abilities and was more than determined to show that she would not let her blindness deter her from living freely and fighting like everyone else. However, sometimes this acted as a ruse to hide personal insecurities.