The most blatant characteristics that some RAD children have include lying, stealing, physical rages (violence toward parents, usually mom, and belongings), cruelty toward pets and siblings, and an interest in blood and gore.
Some of the more insidious characteristics include manipulation (often very subtle), triangulation of adults, and an effort to control everyone and everything in their universe. To further complicate living with a RAD child, these behaviors are often not seen by anyone but the parents. The result is that family members, friends, teachers, neighbors, therapists, and others see a charming, compliant child. As a parent, you're perceived as incompetent, overly strict, or not loving enough.