It was intended to reappear in Castlevania: Aria of Sorrow, but the idea was eventually discarded. However, although not obvious, there were a few skull-marked doors in the game, one in the Top Floor and one in the Castle Corridor. While the door in the Top Floor would prove useless, as it leads to an already-accessible room, the Castle Corridor door would lead outside the castle. The item is still obtainable using cheating devices.
|Item Data: Skull Key|
|Image||Name - Game|
|Type / Users||Attributes / Consume||Statistics / Sell||Found||Notes|
|Opens doors marked with a skull design.|| Key|
| Find: Luminous Cavern (Castle A)|
|Opens doors marked with skull design.|| dummied item|