I'm going to make my haemophobic brother leave the room by putting on gory anime moments on TV
What makes you think gory movies will make him leave?
He told me that watching gory movies ruins his nerves.
You shouldn't be trying to intentionally upset a sibling and make them leave. If you do this they may end up resenting you. They will also become grossed out and possibly ill.
He made my life hell for years, he deserves it.
I can see that there were some difficulties between you and your brother in the past, but it sounds like you are both old enough to put that behind you. If you really want to watch gory movies, you should do so on your own, but don't put them on simply to upset your brother. This will only cause more problems later on.