User blog comment:Androyd09/Updated: Bouncer/@comment-1330314-20101127114328/@comment-3195894-20101127211036

There seem to be enough Big Daddies in Bioshock 1 to have six or even seven research levels, I mean they do spawn after the little sisters are gone. The grinder ones are actually more dangerous than the drill or harpoon, so I made them removable, by the player, or some very lucky splicer.