I'm currently working on 1.3.11 and then 1.3.12. And if you kill the imp overlord, you'll never be able to encounter him again and that might affect your level progression. That means he might possibly have a name, just like Priscilla the highest-level goblin. He is a unique imp and I want to expand his lore at a point. I'd like to explain why that particular imp can't be killed.