Same thing with me, It looks fine but simply doesn't work. I've installed plenty of mods, I know what I'm doing. I even tried just installing herobrine and nothing else but it still won't work -.-""" I have these files only too: reademe, a mob folder with Herobrine's skin inside, 3 /class files which are, EntitySucker, mod_sucker, ModelSucker.
This is a pretty good mod. It's obviously the single most complex NPC mob I've seen, what with it able to pop up behind me and blow stuff up with TNT. It would make a pretty intense bossfight, now that I think about it. But anyway, I first thought it was just a simple scare mob. Then he popped up behind me, threw me into the air and said "Where is Notch!?!?" backward. Later, he popped up and threw all of my items onto the floor. I didn't realize how much of a threat he was, however, until he made a crater nearby with some TNT. I have to say, impressive work! This will do nicely while I wait for 1.8 to implement Endermen.
One thing I noticed though, is that this Herobrine behaves more like Israphel from the Yogscast series than the Herobrine from the myth. Either way, though, he's still pretty damn scary. I also like how you can choose to make him spawn, so that if you're sick of him scaring you, you can just destroy the totem.