The "name" of the artist doesn't appear on his pixiv page or any other contact, only on Danbooru, I don't see any reason to assume that's what he intended to spell, especially since the Σ is more often used as an E for faux-greek speech
It's unclear what this "sakopaet" means by this artist. But the artist name is "魚SKL" or "Yu SKL" (artist is Chinese), he even wrote it in Greek in his profile picture ("ΣΚΛ").