I received the "Lights out!" quest from Jaree-Ra, but it does not match with the personality of my characters. Since I cannot report him to any guard or other authority, I decided to kill him without doing the quest in order to see what happens. However, I assume that he is marked as essential.
How can i check if an NPC is marked as essential or not without dropping them to low HP before realizing they cannot be killed?
Console commands are an option.
I know there is a console command to set them to non-essential but I am specifically trying to check their essential status in advance.