Characters and events from Gundam 0079 are retold but prior knowledge isn't required for viewing. ... who pilots the RX-78-2 Gundam. In GQuuuuuuX, Char Aznable captures the RX-78, ...

Set in an alt-future re-imagining of what Gundam could look like if the Earth Federation lost the One Year War depicted throughout the original 1979 anime, by its very nature GQuuuuuuX has had ...

This is thanks to Char Aznable commandeering the Gundam RX-78-2 before Amuro could, as depicted in Mobile Suit Gundam (or Gundam 0079). Amuro may or may not even exist in GQuuuuuuX's reality.