An assistant and devotee at Mr. Pendletons Satanist mansion. He assists the Slasher in tracking Leonard Wilkes, the nuclear plant manager, and is the only follower spared when the Slasher slaughters Pendletons group.
Marvin serves as an assistant within Pendleton's cult compound.
Marvin is explicitly described as an assistant at Mr. Pendleton's Satanist mansion and helps the Slasher track Leonard Wilkes.
Marvin is involved in locating Leonard as part of the attack on the plant.
The Slasher uses Marvin to track down Leonard Wilkes, the manager of the Harrisburg nuclear power plant.
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