This may be a random question, but to avoid category wars and stuff, it seems like this has been fought about quite some times in the past with people adding and removing him constantly, and he is one of the examples given in the category’s description.
I asked Looper why he removed it and he said that you said that he can be intelligent when he needs to. But like I said to him, Joffrey rarely does any smart moves and his evil acts is mostly too satisfy his sadism and rarely actually benefits him. So why shouldnt he be in the category? Again, just a question to avoid future abuse.