Knights of ren

The Senate Guard was lousy. Remember this?

Sovereign Protector's have cool helmets.

No love for Magnaguards?

^ I was sticking more imperial orientated for this one.

The Knights of Ren are the only ones who were specifically sensitive to the Force, and the dark side no less. They were loyal to their purported master until Sidious was like, "Nope". Until then, there's nobody in this listing that I would more expect to anticipate and deal with threats against me, especially if doing so would give pause to people with standard consciences and moralities.