Katana - One or two, either way his enemies are going to die.
Flails - Two hand-scythes linked by a chain, so basically nunchaku with blades on it.
Hand claws - Think Wolverine, but with blades on his feet, too.
Kusarigama - Chain and sickle for you non-Ninja.
Bow and arrow.
Also able to use magic to accomplish the following feats:
Gliding and hovering.
Creating and ice storm.
Surrounding himself with balls of fire.
Surrounding himself with blades made out of wind.
Causing meteors to fall wherever he wants.
Creating, controlling, and shooting black holes.
Although capable of traditional stealth, the Super Ninja often forgoes this method in favor of killing anyone and anything that stands in his way. If anyone knows of his presence, it's usually only for a few seconds.
The Super Ninja also attracts allies of the big-breasted blonde female variety. They always want the Super Ninja to take them furiously. He doesn't, because the Super Ninja knows a skank when he sees one.
The most prominent Super Ninja is Ryu Hayabusa, star of the Dead or Alive and Ninja Gaiden series of video games.
There is also a character on Chuck Norris Karate Kommandos named "Super Ninja" but he's really just a random guy that put a mask on and started calling himself a Ninja. This angers Chuck Norris.