Obsidian Oni

Obsidian Oni is the Greek legendary yo-kai of the tough tribe. he resembles Gilgaros and Platinum Oni, but is a drain attribute yo-kai and is 2nd in command to Hades. when you befriend him, he says " you're darker than Hades himself! I'll be your friend if you don't tell him I said that." he's based off of Platinum Oni in my idea for yo-kai watch 4.