On Io, Coffee pursued a bounty head, Domino Walker, and started by visiting some places to ask around about him. At one stop, a watermelon truck, she bought a melon as an incentive to the shopkeeper to help her later. Unbeknownst to her, Edward and Ein, who were salivating at the melons at the time, had sneaked into the trunk of her car. She drove into town and, later on, at a gas station, Coffee was approached by two police officers who were also looking for Walker. They intended to search her car, which she didn't mind. However, when they found Ed and Ein, they took her away to the Io Police Department. Despite her insistence she didn't know anything about the child, Sergeant Jeffly Frank interrogated her. She saw Edward again passing by the station and, when he was distracted by a phone call, sneaked out to pursue. She quickly followed Ed and found Walker jumping on a train. She followed behind closely, shooting at Walker but unable to get him. Edward caught up with her and, using Coffee's car as a stepping stone, got on the train. Soon, Shaft, who was also pursuing, fell off the train right onto the car and she crashed. They both survived.
Coffee was inspired by the protagonist of the Pam Grier film Coffy.