During Rum Deal, Donnie and his crew lays siege to Braindeath Isle, specifically the 'rum' factory. After having made fresh 'rum', Captain Braindeath feeds him drunk with the aid of an adventurer and a deal is made: the zombies will stop meddling with the 'rum' production as long as they get some. Seemingly harmless, Donnie's true intentions are only revealed during A Clockwork Syringe. The 'rum' he collected is shipped to Bloodsplatter Isle and then filled with magical rock fragments and injected into severed zombie parts in order to increase their size and use them to create Barrelchest Mk IIs. In a small dungeon on Braindeath Island, General malpractitioners have also been using the 'rum' to mutate the local crab wildlife by injecting it.