I have made my own demon species known as the echo demon.

Looks: They all look the same, medium black hair with brown highlights, pale skin, black eyes, and long white night gowns.
Personality: creepy, sadistic, mischievius, and evil.
Likes: Controlling people, causing chaos, and eating 🍫.
Dislikes: cute sappy moments, children, and gods.
Extra: Echo demons get their name from their magic, when they sing they can take control of one's body without entering the body itself.  When they sing they belong invisible and the sound comes from all direction hiding its location.  Their songs of control have many levels.
Humm: the weakest song. (Used to start the process of control)
Open Song: much like a humm, but with an open mouth. (Second level of control)
Full Song: Strongest level of control and the Echo Demon adds lyrics to the melody. (Highly impossible for victim to gain back control at this stage)
Warning: The creature can only take control of you if you PAY ATTENTION to its song.  If you ignore the song and walk away it can not take control of you.  Stay safe from this harmful beast.