A Henry
A total egomaniac with a face like a potato and eyebrows that look like they were drawn by a drunk man. They try to mess with everyone and make life a living hell for others.
'That guy is a Henry, he turned my life into a nightmare.'
'She's a Henry, and she just ruined my whole day.'
'He's a Henry, and he's still trying to ruin my life even after I moved out.'