What kind of giant are we talking about

[NeoSeraphi]

That's certainly an interesting piece of homebrew, but to answer your question, the 'Giant' refers to the person who runs the site, Rich Burlew, the author of the very popular Order of the Stick comic strip. He occasionally posts here as a user who is named "The Giant", and flaming him will get you perma-banned.

All of this is in the Rules for Posting, by the way, so if you haven't read that, I would strongly suggest you do, as this site has some pretty strict rules that you probably wouldn't expect from a forum, but ignorance of the law is no excuse for it.

Have a good one.

Edit: For your homebrew, your attack routine drops by 15 instead of 5 towards the end, should be /+23/+18, not /+13/+8.