Faceless

Faceless is the only villainous NPC in The Looking Glass. He is the only character that acts like Toriningen in Yume Nikki, transporting Irene to an inescapable area when contacted. However, he only does this during the Faceless event and if attacked.

Past Events
Faceless killed Elise, Irene's mirror counterpart, and her entire family. This is the crime scene in Mansion World. Zalgo promised Faceless power for killing this family, which is how Faceless unlocked his Persona.

The Looking Glass
Irene finds Faceless in the Mirror World and he is confused by her appearance. He tries to kill her, thinking he failed to kill Elise. Irene escapes right before she is killed, but get traumatized by this event. Faceless tells Zalgo of this and they make a plan to dispose of Irene.

Battle for Silent Hill
When Lala and Madotsuki travel to Galar to investigate its possible nuclear capabilities, they meet Irene and learn of Mirror World. Madotsuki can also enter Mirror World but Lala can not. Madotsuki and Irene enter Mirror World and confront Faceless and Zalgo while Lala scales Zalgo's tower in the real world. Faceless battles Madotsuki and Irene with his (and Zalgo's) persona, Cthulu. Faceless is ultimately defeated along with Zalgo, and Haden takes over Silent Hill.