You have the ability to erase all memory of your existence the moment someone looks away from you, using post-hypnotic suggestions. This ability applies to all ways a person can be viewed, even a photograph. When a person reestablishes sight upon you, they remember all past interactions with you, until they stop looking at you once again.
You can issue commands to any person looking at you, that will remain after they look away, acting as a post-hypnotic suggestion. This extends to any instruction issued while a subject is looking at you, including a picture of you will cause this effect.
Additionally, you can absorb electricity, even the smallest amount of static electricity from the air into your body, increase the voltage a hundred-fold, and fire it from your hands. These energy discharges are strong enough to obliterate a person instantly.
You are impervious to some types of scanning devices, though particularly esoteric devices, and clever algorithms can overcome this protection.
While any species that looks upon you will forget when they look away, they can still hear you. Additionally, mundane methods, such as tally marks, can be used to note an encounter with you.