Finsternis (フィンスターニス, Finsutānisu) is a Darkness ÄRM that paralyzes the opponent in a seemingly painful hold. If others step near the victim of this ÄRM, they will be pushed back and possibly knocked out. The name is German for 'darkness'.

Compensation ⇒ The user will turn into a wolf-like beast if the ÄRM is destroyed.