obedience monkey
A person who takes orders like they're on a leash. They don't question anything. Not even when the orders are nonsense.
I was told to chase the mailman. I did. Even though he was just taking a break.
My boss said to type 'hello' 100 times. I did. Even though it made no sense.
The commander told me to dig a hole. I did. Even though it was in the middle of the desert.