Superhuman Stealth – The superhuman ability to move in a covert way. Ninjutsu includes shinobi-iri (stealth and entering methods) and these techniques have been taken to a new level via a combination of technology and new techniques by some characters.
Ninjak (Valiant) is a super ninja.
Elektra (Marvel) is another super ninja but much more famous than Ninjak.
Stealth (DC) – Who’s Who in the DC Universe #12