VIDEOS:
Kill la Kill
Satsuki Kiryuin backstabs Ragyo, her mother, revealing that Honnouji Academy was always made to stop Ragyo's plans of conquest. This is because of Ragyo killing Satsuki's father a long time ago, as well as her abusive tendancies. Needless to say, Ragyo absolutely deserves all of it.
Example of:
Betrayal by Offspring