 Robdal is one of the main characters in the "Only Fools and Horses" prequel "Rock & Chips", where he is accompanied by explosive expert Gerald "Jelly" Kelly and has a habit of calling people "cocker", among them Del Boy and Boycie.The first episode of "Rock & Chips" fully reveals the details surrounding Robdal's affair with Joan which resulted in Rodney's birth, and establishes the beginning of his uncle-nephew-like relationship with Del, who he accompanies (along with Reg, Granddad, and Del's gang) on their first Jolly Boys' Outing to Margate, although the trip is merely a ruse so that Robdal and Kelly can rob a nearby jewellery store.It is revealed in the second episode, "Five Gold Rings", that Robdal did in fact love Joan deeply and wanted to see his son grow up, but it was difficult because of Joan's marriage to Reg and his situations with Del Boy and the police.