Sgt Ucello
Mario Ucello
Occupation U.S. Army Sergant
First appearance 9th December 1970
Last appearance 23rd December 1970
Number of appearances 2
Played by David Cargill

Sergeant Mario Ucello was a U.S. Army Sergeant and an old friend of Greg Flint and Gary Strauss. Stationed at Burtonwood he was the secretary to Major Ryan and rang Greg and Gary to summon 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 insistance that they had never played the game before, beat Stan Ogden and the regulars.