I'll explain what I like about Bristleback and maybe you can find me a better lol counterpart (I believe I played rammus... Hes the guy that charges people with his rolling move, right? To me that feels more like bara.)
I generally like tanks. I like being able to take a great deal of punishment. But tanks need to be focused in order for their tankiness to really shine. So particularly, your tanks need to have some way to instigate people to fight them. In dota, this is sometimes accomplished by buying a radiance (which I think there is a weaker analog in LoL). But what I find frustrating about spending your money on instigating is that this replaces money that could be spent making yourself even more unkillable.
Bristleback combines all of this into his abilities so that he is one obnoxious hero that, if left undealt with, can kill your whole team given enough time, through his quill burst. But then his bristleback ability, if used correctly, means that even when the enemy team wants to take care of the quill burst threat (since prior to the team fight I've been running around bursting quills on people), this only causes them to be in even more trouble. Lastly, the snot is the icing on the instigation cake. If BB isn't dealt with, the goo lets him go in for the kill. It gives a definite reason to kill bb before he has a chance to put insurmountable dmg on you. And this is all without his ult which gives you the position and bonus dmg to really seal the deal. All this means that you can spend all of your money on all of the tankiness you could ever want, turning yourself into an unkillable powerhouse with the dmg necessary to kill anyone you want and no one can get away.
Does LoL have a counterpart? A hero that has in its skills both means to tank, and reasons for enemies to focus him, while being able to take advantage of gold (more tankiness equates to more dmg). I want to be a tank and force people to fight me, and then be unkillable when they decide to fight me.