nothing useful. — why does flowey attack “chara”?

why does flowey attack “chara”? (undertale spoilers) depending on how the game is played, flowey will mistake frisk for chara in the pacifist route or only ever recognise chara in the genocide route.

Undertale: Flowey Build a Villain Workshop

Here's some inbattle animations of Chara and Frisk in Deltarune fighting style yeah. : r/Undertale

Photoshop Flowey/In Battle, Undertale Wiki

nothing useful. — *

nothing useful. — when can flowey actually see chara inside frisk?

nothing useful. — The Bosses in the Genocide Route

Flowey, Inconsistently Heinous Wiki

If Chara is not bad, then why Flowey recognize us as such when we do evil things? Haha, I like being controvertial : r/Undertale

Flowey staged the first soul rebellion : r/Undertale

Flowey, Character Profile Wikia

In Undertale, you can get additional lines with Flowey. In 1 of these, he says that Sans has caused him his fare share of resets, but it seems like Sans doesn't know

nothing useful. — the real reason chara kills flowey