You were, of course, Green's older sibling. Having got caught up in the Mira HQ Incident while trying to help others, such as Indigo and Dark Slate Blue, to safety. You became an Impostor in tge process. And for your attempted help, Indigo was very much in your debt once he became leader of the Impostor Hideout.

You noticed The Skeld Crew, while running away from the Impostors, eventually separates from each other, with Green, Cyan, and Black falling back at the bottom of the Impostor Hideout and meeting an infuriated Indigo, who demands to know where Glitchy is.

Green ignores Indigo's question and exclaims that Indigo was right about Dr. White being evil, but the latter tells them to stop talking and just state Glitchy's whereabouts, threatening to kill the trio if Green doesn't speak up. Green tells the Indigo that Glitchy is in the hands of Dr. White, but the Impostor doesn't believe them and gets mad at how Green expects them to listen to them after everything they have done.

Angered, Green states that, of course, Indigo would never listen, because they are too stupid to realize that the Plant Cure made by Dr. White is actually designed to kill them. This causes the surrounding Impostors to become worried and doubtful of Indigo after hearing Green's statement, subsequently enraging the Impostor leader, who then charges at the three Crewmates afterwards.