Which character has the worst death in Game of Thrones episodes?

There are many types of deaths on television. Creators of shows can think of many gory and gruesome ways to kill off its characters. Since this is fiction, they can kill off their characters in many different ways. There are certain ways that deaths can be evaluated. I believe that the pain inflicted on the person should definitely be taken into account. To me, Gregore Clegane had the worst death because it was the most painful.

However, his death seems justified due to raping and killing Elia and her children. However, if I was going to experience the same death as the character without thinking about what he had done before, this death would be the worst since he was killed by a poisonous spear.