"Split" is a work of fiction, and it isn't based in reality. It's main character is a caricature of the disorder of DID in a fictional character with impossible abilities.
It doesn't mean anything at all about you.
Or me. Or anyone else with DID.
All parts of a DID system are ultimately there to protect the whole. Even the ones who behave in way that we wish they wouldn't. And, even if some alters are narcissistic and lack empathy (the hallmarks of someone who is a psychopath) other parts of you have empathy in buckets, and are absolutely not narcissistic, so they can't really be true psychopaths anyway. Because they are a part of the whole of you.
So, I don't think you need to worry about Split or about parts of you being a psychopath. Even if some parts needed to BE that way in order to protect the whole so you could all get through.