Leon Kasun was a human Insurrectionist. Born on Glabetov in 2518, Kasun engaged in rebel activity from a young age, helping his father smuggle food and supplied to units of the Glabetovan Resistance Organization, and eventually becoming part of the Glabetovan Air Service in 2540. However, in 2542, he was forced to flee the planet due to a personal dispute with one of the criminal syndicates operating under the noses of the Glabetovan People's Republic. Finding his way to Mamore, Kasun found further work as a pilot for the Organization of Mamorian Nationalists.