Manipulating. He's making you look like the bad person for objecting to his cruelties.
Being selfish. He doesn't mind making you feel horrible as long as he gets his own way.
Blaming. He did something wrong, but it's all your fault.
Projecting. His petty, small and childish behavior has become yours.
Putting on a self-pitying drama. He's a martyr who believed the best of you, and you've let him down. <<THEY ALL DO THIS
The end result is a family in which almost all communication is triangular. The narcissist, the spider in the middle of the family web, sensitively monitors all the children for information she can use to retain her unchallenged control over the family. She then passes that on to the others, creating the resentments that prevent them from communicating directly and freely with each other. The result is that the only communication between the children is through the narcissist, exactly the way she wants it.