"He is stronger than steel and moves faster than a whirlwind.
Sometimes he hides in mud. Other times he transforms his shape, like an ever-changing cloud.
Although his fighting spirit burns like fire, his mind is as calm as still water.
'Violation of the Commandments'
Should Beetlejuice fail before completing the mission, he will disappear before the dawn and vanish forever.
Keep this knowledge in your heart and mind.
- from the 'Secret Manual of Oboro Ninjitsu.'