kakocrite
A person who plays the villain but is just a scaredy-cat. They use mean looks to hide their fear.
He said he’d haunt me, but I saw him sleep with a teddy bear. Total fake ghost.
She threatened to eat my lunch, but she cried when I took it. Kakocrite much?
He screamed at the bus, but he jumped when the bell rang. Fake evil, real coward.