"Luc (ルック, Rukku?) is the instigator and leader of his group, sometimes called the Destroyer forces. Luc, like Sasarai, is a clone of the Harmonian leader Hikusaak and has carried the True Wind Rune within him since birth. Luc eventually escapes Harmonia to live with Leknaat and aids in the events of the first two Suikoden games. After seeing a vision of the future in which humanity is wiped out in the struggle between the runes, he decides that fate is currently fixed. To break this fate, he must sufficiently disrupt the order created by the 27 True Runes; his plan is to destroy his own True Wind Rune. To do so, he will need the combined powers of many True Runes, and seeks to gather the other Elemental Runes from the Grassland region. With Albert's help, he returns to Harmonia and becomes a bishop and then stirs up trouble as the Masked Bishop, seeking to use the Harmonian army to flush the Runes out and capture them. To Harmonia, this will seem to be a simple attempt to gather the True Runes for Hikusaak; only the other Destroyers know that he wants them for himself to enact his plan."
Source: Wikipedia, "List_of_characters_in_Suikoden_III", available under the CC-BY-SA License.