After escaping the Basalt Delta, you enter a Soul Sand Valley on your journey. As you travel through the sandy terrain full of bones, you spot an odd looking Ghast floating over the lava. It looks different from the other Ghasts, as it looks more humanoid, with its bottom half being fused into some sort of ghost tail. The humanoid Ghast turns around and spots you

[Ghastenna]: "O-oh. Who are you?"