Something odd, to me atleast. ( NPC find )

So, I was trekking my way along Sen's fortress with the mindset " Gee, I really need some more green blossoms, oh hey, while I'm at it, I'm going to test these binoculars! " So, I ran my way down to the merchant, bought his crap, and was thinking. " I never killed Ricard yet, I bet he'll be tough on NG+++, let's do it. " he wasn't, I was disappointed. Whilst going down that huge ladder on the right side of the castle, past the huge knight with the shield and mace, I noticed something.. It started to bug me after about an hour of searching for a way to get to him. He looks almost like the boulder thrower, or even the Giant blacksmith. Right past the huge ladder there's nothing that shows a way down to him, but it looks like the level was designed to make your way to him, a teaser indeed. So, for about an hour, I ran at an angle, jumping from the ladders, only to ping-ponged off the wrong side, so I switched, if I can get the result I want on the opposite side, I can do it here too. After about 40 flask uses, I gave up and my girlfriend called, and I'm pretty sure we'd all set the game down for that. *winkwinknudgenudge.* So I come to you faithful forum, find out what this npc is, does it have a prompt, is it kill-able? You should see his head and shoulders peaking out when you see it, you'll know. If there's a modder out there, try and see what you can do.

You mean the giant who opens the gate? You can get to him.
https://www.youtube.com/watch?v=dSeNi7ViRPw

Ouch, now I feel dumb. I've never took the time to fully explore Sen's yet, now I know. Thanks for that, friend.

its a golem, you can get to him as soona s you enter sen's, kill the two guys in the bigining then when you get to the first axe thingies drop down on the far left where the titanite demons are and theres gonna be staris leading to a ladder, go up theres a body with a soul, hit the wall in front of you which reveals a hidden ladder then go up and kill the golem whichgives you a titanite chunk(lame). that spot is really good for dueling.

I was just thinking that, it has a forum FC written all over it.