Big Daddy Harvester

Say hello to the harvester.
After the collapse of Rapture from Delta and Eleanor's destructive escape. Not all the city was destroyed.

With the remaining little sisters dead or on the surface, these big fellas are equipped to suck out whosever adam is available. They were first used by Sinclair to go out into the ocean and gather adam slugs, suck them dry with the extendable needle in the palm of their hand. But not only do they absorb their own adam. These guys have the ability to take in surrounding sea water and heat it up into steam fuel to keep them moving. Fierce bastards...