Diego appears less frequently than Robbie, and shares several traits with both Robbie and his older brother Jonesy. He is an inveterate prankster, and in most of his appearances he is seen pulling off a prank of some description, with Jen being a favored target of his. Examples of these occur at the start of "Snow Job" and in "Whoa, Baby." Because he is usually seen pranking with Robbie, and Jonesy appears to pull his pranks alone, it seems likely that he is the planner and instigator of most of the pranks he and Robbie pull off.