Koshchey the Deathless, as well as Kashchey, Kashchei, Katschei, and Koshchei. Famously kept his soul hidden inside a needle, inside an egg, inside a duck, inside a hare, inside a chest, under an oak tree, on an island in the ocean, guarded by a dragon (or some variation).



5-boxing all DKs? Probably not, but at least I have a name for each account.