The RX-78GP01 Gundam "Zephyranthes" (aka Zephyranthes, GP01, Unit 1) is a prototype general-purpose mobile suit from the Mobile Suit Gundam 0083: Stardust Memory OVA series. It was piloted by Kou Uraki.

As described in the Master Grade model manual and MS Encyclopedia, at the conclusion of the One Year War, the Federation started the Gundam Development Project, aimed at creating mobile suits superior to those that Zeon had developed. The RX-78GP01 Gundam "Zephyranthes" was the second of five prototype Gundam-type mobile suits completed under this plan.

The RX-78GP01 was designed to be able to operate under any condition on earth or in space. To that end, its design is superficially similar to the other RX series Gundams. Unlike previous suits, this was one of the first to re-introduce the core fighter concept in its design, utilizing the recently developed FF-XII Core Fighter II as the cockpit. Though the GP01 is operable in both Earth and outer space, it needs to be configured for each environment before battle by using the appropriate Core Fighters. Otherwise, the GP01 will suffer from a lack of balance and become near impossible to pilot.

One major innovation in the RX-78GP01's arsenal was the addition of a beam rifle that used a removable energy capacitor called e-pac. Previous beam rifle designs had the energy capacitor integrated into the rifle directly, resulting in the rifle becoming dead weight once the capacitor was depleted. With e-pac, a beam rifle can be used as long as the pilot has a ready supply of replacement e-pacs. The RX-78GP01 has three e-pacs (one mounted on the rifle, two held in reserve on the shield) in its normal deployment configuration.