Tudo o que é explicitamente declarado em uma fonte G-Canon é G-Canon e nada mais, o resto está em um nível mais baixo de cânone. Um bom exemplo é o grupo de caçadores de recompensa que Darth Vader manda para encontrar o Millennium Falcon.
Eles são todos mencionados no Script
The group standing before Vader is a bizarre array of galactic fortune hunters: There is Bossk, a slimy, tentacled monster with two huge, bloodshot eyes in a soft baggy face; Zuckuss and Dengar, two battle-scarred, mangy human types; IG-88, a battered, tarnished chrome war droid; and Boba Fett, a man in a weapon-covered armored space suit.
VADER: ...there will be a substantial reward for the one who finds the Millennium Falcon. You are free to use any methods necessary, but I want them alive. No disintegrations.
Assim, seus nomes e aparências são todos de nível G, mas não as histórias de trás. De artigo da Canon sobre Wookipedia :
G, T, C and S together form the overall Star Wars continuity. Each ascending level typically overrides the lower ones; for example, Boba Fett's back story was radically altered with the release of Star Wars Episode II: Attack of the Clones, forcing the retcon of older source material to fall in line with the new G-canon back story. However, this is not always absolute, and the resolution of all contradictions is handled on a case-by-case basis.