Flowey staged the first soul rebellion : r/Undertale

Underlore

Frisk and Flowey, the kingdom's Royal Hunters! Undertale AU plus backstory in comments! (Drawn by Killb94) : r/Undertale

Hating the player — EYEZ N TEEF

Steam Workshop::Parf's ROA Collection

Gold Flower Patch — @nochocolate made a theory post about body/soul

Underlore

Undertale: Differences In Flowey Interactions Between Pacifist And Genocide Routes

Fanfictions on TheGoodUndertale - DeviantArt

According to several wikis, these are the morality of the Undertale/Deltarune characters: : r/Undertale

Omega Flowey Plush : r/Undertale

Flowey staged the first soul rebellion : r/Undertale