Lieutenant Master Pierce Rayer (マスター・ピース・レイヤー Masutā Pīsu Reiyā?) is the commander of the White Dingo unit in Mobile Suit Gundam Side Story 0079: Rise From The Ashes.
A space colony of the Earth Federation has declared itself a Duchy of Zeon and it has declared war for independence against Earth Federation. Then the Zeon forces launched Operation British which they captured a space colony to drop it on Jaburo. The Earth Federation was able to destroy most of the space colony, but a large part of the colony was still intact and had entered the Earth's atmosphere hitting Sidney, Australia. Everything there was destroyed, creating Australia's first bay with the initial mission failing Australia was under the control of Principality of Zeon. Eleven months after the initial start of the war, the Earth Federation finally amassed enough supplies and troops to launch a massive counter-offensive in Europe called Operation Odessa. Due to the savage success of this attack massive counter-offensives began all over the planet, even in the devastated country of Australia. Leading the operation to take back Australia was Master Pierce Rayer who is in command of an elite mobile suit unit called White Dingo.
In the beginning of his missions Rayer and his men pilots two types of mobile suits the RGM-79 GM or the RGC-80 GM Cannon. Rayer have been charged of being a guerrilla supporter for the three main units invading Australia. Lieutenant Rayer's job is to patrol the combat zones and help prepare the way for total victory.