Many of the recurring characters of the series have received more depth in their personalities, which are usually based on their respective element. Aang, a pacifist monk, is also very carefree and childlike, which is commonly attributed to the "freedom" of the wind and the air. Toph, despite being blind, is extremely perceptive of the world around her due to her connection to the Earth. Unlike Aang, she is extremely brusque when criticizing others, which is attributed to Earth's tough and unbreakable nature.