Dark Souls 2 is widely considered the "worst" Dark Souls game, which is not only wrong (that distinction goes to the greatest hits listlessness of Dark Souls 3) but ignores the fact that it could have had a giant hermit crab with a castle tower as a shell.
As discovered by YouTuber Zullie the Witch, the Lost Bastille area was originally meant to have a big 'ol crustacean boss battle, which would have marked the first appearance of a crab in a series that absolutely loves 'em. The one cut from Dark Souls 2 wasn't just a typical giant crab either, but instead a crab wearing a portion of the Lost Bastille itself on its back.