Ralph Eifman

Professor Leif Eifman (レイフ・エイフマン) is a famous Union engineer, technical chief, and scientist of several fields. He's also the co-developer of Union's OverFlag.

Anti-Gundam Investigative Squad
Professor Eifman joined the Union's Anti-Gundam Investigative Squad as their technical chief and adviser to aid in capturing the Gundams. Having Billy at his side, they custom modified Graham Aker's Flag and renamed it as "Over Flag." Eventually the modifications expanded to an entire squadron of Over Flags to combat against the Gundams.

Death
While investigating over Celestial Being, Eifman made a revelation. He realized somehow the correlation between the Jupiter incident 120 years ago and Celestial Being gave Eifman an epiphany over Aeolia Schenberg's philosophical intentions; his revelations were too late. His own computer monitor revealed a message,"You have witnessed too much." Shortly after, the Thrones attacked and Eins fired its GN Mega Launcher, vaporizing him before he could reveal the truth to anyone.

Legacy
Billy, who had become head of mobile suit development, had discovered some of Eifman's handwritten notes. He had incorporated a theoretical system into Graham's (now called Mr. Bushido) new mobile suit, the GNX Masurao.