Minecraft wiki entry for Sculk_(disambiguation), associated text: "While not related, Sculk name was inspired by Jeb's process with naming the Shulkers - he liked the word "Lurker", but changed it around a bit to feel new [...] Sculk is only one letter changed of Skulk, meaning "keep out of sight, typically with a sinister or cowardly motive"" – @kingbdogz on Twitter