Spud is a juvenile inmate with Duncan for unknown reasons. Spud was the only one who'd agree to go with Duncan. Despite being from juvie, Spud is a good-natured person and a kind friend, but is described to have all the brain power and drive of a very dull sloth. Spud is incredibly dim-witted and has a delayed reaction time to things like fear, pain, panic, and sometimes even excitement, as shown on many occasions. As a result, he is often a source of irritation to Duncan and a hindrance to the competition at times. However, Spud shows that he is at least partially able to hold his own, as long as he gets the direction he needs.