Standing for "slow-moving, projectile-shooting, f'ed-up-melee", this Big Daddy was intended as a slow, ranged type that would center itself and kneel to fire a heavy projectile at enemies via a large arm-mounted cannon. Despite being designed for range, the developers noted its melee attacks were intended to be just as powerful, as shown by the large hook carried around by the Slow-Pro. In an interview with GameTrailers's "Bonus Round", BioShock designers Bill Gardner and Hogarth de la Plante stated it as an aspect cut from the game late in development, and one they would have most liked to have kept out of all the cut content for the title.