Allant?
They went through this much trouble just to cut him off (even if he was a Gwyn/Allant Clone...). I mean, this guy is fairly similar to Gwyn except he has an AoE, a faster grab (and judging from the animation, worse, considering it seems it leaves you right in front of him) and a more varied moveset...and he has a flashy cape 0-0.
Anyways, details I could find (from an unreliable source) was he was suppose to be a mid-game boss, being a prerequisite, on top of Sif, to battle the Four Kings (in his case, to open the floodgates). It was probably scrapped due to the possibility of skipping him via murder.
Seriously, if you were going to scrap anything, it should have been Bed of Chaos!