Penga was one of the first students of the Beifong Metalbending Academy and the third metalbender in history.[2][3] As the daughter of a wealthy noble family, she was irresponsible and greedy in her childhood, while suffering from low self-esteem. Penga overcame these traits under the tutelage of Toph Beifong, eventually becoming a talented bender and instructor at the Metalbending Academy.[1]