Sledgehammer was an antagonist and the first subordinate faced in Clock Tower 3. He used a hammer to bludgeon his victims.
Robert Morris, as Sledgehammer, was a stonecutter who killed 26 victims and sentenced to 486 years. He didn't serve it, and was instead, hanged. He was resurrected due to his status as a subordinate for Lord Burroughs.
Alyssa Hamilton arrives in a war ravaged 1942, London. She enters a store and witnesses Sledgehammer bludgeoning a twelve year-old pianist, May Norton, to death. He then chases her to a concert hall. In the main performing room, Alyssa leaves a pocket-watch on the piano, which was given to May by her father. Outside, in the courtyard, Alyssa gains her bow and arrow and defeats Sledgehammer.
Sledgehammer's ghost would appear with the other subordinates during Lord Burrough's ritual.