Sergeant Mario Ucello was a U.S. Army Sergeant and an old friend of Gregg Flint and Gary Strauss. Stationed at Burtonwood, he was the secretary to Major Ryan and rang Gregg and Gary to summon them to the base on the instructions of Ryan who was trying to trace AWOL Joe Donelli. A few weeks later, along with colleague Rod Malone, Ucello joined their two colleague at a party they held in the Rovers to say goodbye to their old friends from Weatherfield as they left the area to return to Germany. They formed an impromptu darts team and, despite their insistence that they had never played the game before, beat Stan Ogden and the regulars.