Even with all my angelic powers + imagination manifestation + imagination based powers. i don't think i can kill a being who is so strong that he was able to damage the tree of knowledge which contains existence just by entering our reality, oh and is so strong that the literal 3 embodiments of death are his rival as in he could most likely easily match them.

@Tsukareta123 Yeah, my assumption with that has always been that it varies on the level of the power, though it kind of annoys me sometimes when a power's applications would suggest that it possesses a greater version of itself.

In any case, Absolute Freedom alone would be an instant win, as would Alpha Reality, Potentiality Lordship, etc.

@Ludwigkoopa7000 2.O well the reason I chose all of those is because of my bioquanite serum idea I have that possess all the powers listed

I still feel like you guys don't understand SK that well...

@TheNerdEternal1 i do, that's why i stated that even with my favorite powers i couldn't beat SK. i mean i can't think of many people who could beat him

He can't beat autopotence, which is basically self-omnipotence.

Part of the issue, I think, is that there are many different canons, and the power of the Scarlet King varies dramatically between them. In one, he's created out of the conflict between premodernity and modernity as an entity in the noosphere, in which case any power capable of manipulating concepts could beat him. In fact, I think that, in one canon, the Foundation used SCP-6659 to destroy the Scarlet King by removing the capacity to conceptualize it, thus destroying them in the noosphere.

Of course, there's also the fact that many people here, including myself, have absolute or omnipotent powers as their favourites. By their nature, the majority of absolute powers would be able to deal with most SCPs with ease, excluding perhaps certain entities like 001 (Swann's Proposal).