obedience monkey
A person who acts like a robot. They follow orders without thinking. Even when the orders are pointless or plain stupid.
I was told to stand in the hallway for 10 minutes. I did. Even though no one was watching.
My teacher told me to whisper in the classroom. I did. Even though it was already quiet.
My boss said to answer the phone 20 times. I did. Even though no one was calling.