Grigori
Grigori is a entity in Gm Construct 13 beta. He appears at events called, "Sad Grigori", "Pootis?", "The freeing of Grigori", and "Doll Ritual". When you go to the Darkroom, you'll see Grigori in the top right when you enter the darkroom. When you go close to him, Grigori and the light prop will fade away. If you go to the sercet of Building C, you see a big billboard and you'll see a button, if you press it, a lot of Combine, a Antlion Guard, and Grigori and they're killable. If you go to the Sub-Marine room, you'll see a black hole and a Citizen Radio. if you put the Citizen Radio in front of the black hole, it'll say some numbers and the Half life 2 radio sound. If you type the numbers at the console, you'll be teleported to Grigori trying to kill some zombies. Fun fact: "Saving Grigori" is a bit not permeant. When you go to the Sub-Marine room again, you can do the doll ritual which takes 5 dolls, 1 skull, and one "AlyxDoll" if you complete the "Doll Ritual" Grigori will appear. He has a black appearance and if you kill him with one bullet, he'll turn to a package which can heal you if you put it near the Curse detector