Both
6747 is the more complicated Variant (and more lore based one)
Essentially It reveals the scarlet king is actually A foundation doctor being used out narrative as a vessel for Her to enter into SCP's Narrative and directly Destroy it From the human consciousness (Only until The SWANN'S Die) (For uninformed Swann means Author or any type of Human in the real world that is not fictional) In this story SCP 2747 got what she wanted and Killed everyone in the real world because that is basically its Goal Is to eat through Fiction To get The other eldritch Meta entities (Including us) Though this fails horribly Because She gets tricked by writers into believing she can actually become real when in reality no matter what She stays fictional because we created the concept of meta fiction entirely meaning she cannot go anywhere outside of it so in reality she just killed the 1000th Swann Avatar And not the real thing .