Allen's abilities can be pretty pervasive!
- His cursed left eye can see spirits possessing people or objects, and it can detect evil creatures such as demons or Akuma. Upon being close to you, his eye would come to life and tell him you're some sort of demon-like entity, as well as the direction you're in. It works like radar.
- Allen's Innocence damages and hurts demonic creatures. Touching his left hand to a demon's face, for example, might leave a burn, as sizzling steam rises from the touch.
- When his arm (his Innocence) transforms into the Sword of Exorcism, slicing or stabbing a person will exorcise any evil entity within them without hurting the body. It may leave a line of cross-shaped scars, though. If you are not possessed by something evil, it will pass through you harmlessly. If you are an evil entity yourself, it will hurt you a lot.
Comment here if you're not okay with any of that! I will ask permission before doing any of this anyway, but I like to know what to avoid outright.