Simon was pulled out from shipping out for an operation in Iran and was set to take down the Zaragoza Drug Cartel that was headed by Manuel Roba. Beth also gave birth to a young boy named Joseph who would become Riley's nephew. Riley was seen as the best man at Tommy's wedding. He then helped Tommy get rid of his drug addiction and made him marry a woman named Beth in June 2006. In March 2004 Riley beat his father for abusing him and his mother and threw him out of the house.

He opted not to go back to his life at the military until he fixed their lives. His mother was constantly getting cheated on and his brother was addicted to drugs.

Simon came back home one day on January 2003 and found his family in a predicament. He was an expert soldier which got him into the Special Air Service. After the September 11 attacks occurred, he joined the military. Simon used to be an apprentice butcher at a grocery when he grew up. At one concert, his father made him laugh at the death of a prostitute who was addicted to drugs. Simon's father would sometimes take him to the Bone Lickers concerts. When he and his younger brother Tommy got older, Tommy would always wear a skull-mask at night to scare Simon. On most days, his father brought dangerous animals back and taunted him with them, even going so far to force him to kiss a snake or threaten to kill him with them. Simon Riley had a very traumatic childhood while growing up in Manchester, England because of his heartless father. He also appears as a customization option in Call of Duty: Ghosts.

Ghost appears as a main character in Call of Duty: Modern Warfare 2, Modern Warfare 2: Ghost, Call of Duty: Online, Find Makarov: Operation Kingfish, Call of Duty: Heroes, and Call of Duty: Modern Warfare 2 Campaign Remastered. Lieutenant Simon 'Ghost' Riley is a British special forces operator, and a prominent member of Task Force 141, known for his iconic skull-patterned balaclava, headset, and dark red sunglasses.

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