Sarah

Sarah is Ed's bossy, psychotic, spoiled, short-tempered younger sister, who acts cute and charming only when it serves her. Sarah has Ed's unending loyalty and obedience, mostly due to her constant threats of tattling on him. The fact that their mother always believes Sarah, even when she is fibbing, doesn't help. She has a very loud mouth, a hair-trigger temper, and is easily agitated by others, especially her brother.