Under his birth name Mun-Dee, the Sniper was born in the underwater country of New Zealand to Bil-Bel and Lar-nah. After his father made a failed attempt to get New Zealand's council of leaders to send their country into space he decided to build a rocket for himself in order to go to space by himself. However, since his rocket is only built for one person, he ends up getting into a fight with his wife over who gets to be the only occupant. Amidst the confusion, the Sniper, who was an infant back then, proceeded to crawl into the rocket and he was launched through New Zealand's underwater dome which flooded the city and killed all of its inhabitants save for his parents, who managed to survive. Because of faulty construction on the rocket, the Sniper crash-landed in Australia where he was found by his adoptive parents; Jonathan Mundy and his wife Mrs. Mundy. Having been raised by his adoptive parents throughout his childhood, the Sniper likes to spend his time outdoors under the hot sun. During the summer of 1968, he was hired as a mercenary to continue the war between Redmond and Blutarch Mann, as each fought each other for the land their late father had purchased. During those years, the Sniper would stay in touch with his adoptive parents either by payphone or mail. In 1971, during the Robot Wars, he fought against Gray Mann's robot army with his team, in which they secured victory. Eventually, after he and the other mercenaries were fired by Gray Mann after he took over Mann Co.- thanks to his daughter Olivia Mann- the Sniper returns to Australia where he reunites with his adoptive parents. Jonathan and his wife died six months later, leaving the Sniper to now live on his own. One day, while he was cleaning his parents' house, he discovered that he was adopted. During his time alone, he had gone bush, abandoning his normal surroundings and reverting to feral quotations.