The RX-78GP01-Fb Gundam "Zephyranthes" Full Burnern is the upgraded space-use version of the RX-78GP01 Gundam "Zephyranthes" introduced in the OVA Mobile Suit Gundam 0083: Stardust Memory. it is piloted by Kou Uraki.
Originally, the GP01 was capable of operating in space by swapping out its Core Fighter and equipping other optional equipment, such as leg-mounted propellant tanks. In fact, these optional equipment rolled out on the same day as the GP01 itself. However, after the GP01 was heavily damaged in battle, it received a complete overhaul, incorporating many new ideas and reflecting trial data collected on Earth. Since the resulting mobile suit deviated from the original plan, it was given the new, unofficial model number of GP01Fb.
On October 31, U.C. 0083, the GP01 was heavily damaged during combat with Cima Garahau's MS-14Fs Gelgoog Marine Commander Type. On November 2, the Albion entered Von Braun, where Captain Eyphar Sinapus tasked Anaheim Electronics branch manager O'Sullivan with repairing and modifying the GP01 for space combat in two days. The Gundam was moved into Anaheim's Von Braun factory, where it was overhauled into the Full Burnern.