Thank you for replying Poring King
I follow the guide on judas. I just extract my lub files and edit it directly. I have input my custom mob on npc identity and jobname and also adding it on Re/mob_db also in pre-re/mob_db
CustomID# 3465 & #3436
Also I already make folder on client data/sprite/korean language mob and also put the custom sprite dragging it back using grf editor.
I use grf editor to extract the file.
Do I need it to decompile to Lua file first?
Already stuck for a week now. When spawning ID I get that error.
Thank you, All the help is always appreciated