Lief and Barda encountered Beef when they spent their time on The Lady Luck. They saw him in the vision that the painting showed them. When they were about to escape the undead rowers came after Lief and Barda. Beef was most likely among them.
Beef was easily persuaded especially when it came to gold or money. He failed to see through Laughing Jack's lies even when Coffin warned the crew about their fate. He also had a violent nature as he did not hesitate to murder Coffin.