In the game Gihren's Greed, one of the parallel timeline of Universal Century where Zeon Forces won the One Year War, Char Aznable will leave Zeon and start building up a new faction, Neo Zeon (differ from the original Axis Neo Zeon in ZZ gundam), to seek other ways to finish his revenge against the Zabi's. Joining New Types and research teams from both Earth Federation and Zeon factions. The research team combined their knowledge in making mobile suits and created the RX-78/C.A.
Mobile Suit Gundam: Gihren's Ambition - RX-78/C.A.