you try Minecraft Herobrine Mod

but when you spawn Herobrine and get close to him you die, after you respawn he is not far from you, he just walks around in circles. he looks quite silly. but cannot be killed/defeated

when you get close to him you die but when you attack him nothing happens. and you look at him with a tired and annoyed look

he just shakes his head and nods without saying a word