Marty Sue ?

[Clevernickname]

For some reason I'm writing a HP fan-fiction. But I've read all these insults on encylopedia dramatica and I'm trying to make a character that is -entertaining. -not a Marty Sue. What do you think:

A pirate lands near the HP school. He's violent and cursing. Right off the bat he kills one character and manipulates another into helping him steal stuff. (Crabbe and Goyle, so no loss.) I was also thinking he'd hit on Hermione and get shut down.


That's as far as I've got. Do I need to fix things to make it better? Or what can I do so people won't hate it? OR, should I just write whatever I want and who cares what others think?
-Do I need to have Harry Potter in a HP fan-fic? Is he mandatory?

[ANNiE]

not cool.