The Slow Pro Big Daddy was cut from the final version of BioShock.

The Slow-Pro, dubbed "SlowProFum" or "Slow Pro FUM" by the development team, was a model of Big Daddy cut from BioShock.


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.[1] 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.[2]

BioShock 2Edit

Main article: BioShock 2

BioShock 2 introduced an updated version of the Slow-Pro, the Rumbler, and given a slight backstory to explain its origins despite not appearing in the first game.[3]



  1. "Introducing Irrational Behavior" podcast at
  2. Bonus Round Episode 10, Part 2 on
  3. Gilbert Alexander's Audio Diary: The Rumbler

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