Lipstick-faced Demon

The Lipstick-Faced Demon is the main antagonist in the first INSIDIOUS film and is mentioned in the 2013 sequel. He is thought as the "King of The Further". He also favors having Dalton's body.

Insidious
In this movie the demon is the main antagonist of the entire film. As he favors Dalton's body he has a lair with the look of a theater of some sort. The Demon's attire has a spiked tail, has hooves for feet, white eyes with a straight black pupil, also has hair that is smoky grey and looks electrocuted. His face and body is all black except his face that is bright red in the shape of a dragon lunging.

Insidious: Chapter 2
In this film he appears at the end of the film as the spirit rising from behind Allison as Elise gasps "Oh My God!