The IA-C01: EPHEMERA is a Rubicon Research Institute bipedal lightweight Armored Core model and a C-Weapon that first appears in ARMORED CORE VI FIRES OF RUBICON.
Summary[]
A lightweight bipedal AC model, intended for unmanned operation. True to its purpose, many of its parts do not take human physical limits into consideration. But an old development quirk allowed for operation by a human pilot, albeit with actuation translation that outstrips the capability of human nerves.
The EPHEMERA possesses decent combat and defensive stats for its weight class, but excels in generator output management. This allows it to optimize generator EN-loads to their highest potential.
Several blue rusted-out EPHEMERA units can be found in the Engebret Tunnel, containing logs from Professor Nagai. One can also be found in Institute City, atop one of the taller buildings, and contains a video log of the Fires of Ibis.
An EPHEMERA unit is directly controlled by the PCA's Enforcement System as the last line of defense against anyone attempting to traverse Watchpoint Alpha and reach Institute City stationed at Depth 3, where the Enforcement System's mainframe and a defensive laser grid system are located. In the Alea Iacta Est route, another EPHEMERA unit, named ECHO, is used by Ayre for a fight at LOC Station 31 that determines the outcome of the Coral War.