Hazy Moon: A sword belonging to the Oboro Clan and wielded by Joe during his time as a Shinobi. It can cut through steel and other solid materials. Joe can charge for a stronger attack.
Shurikens: Also called as a kunai, Joe tosses a shuriken to harm (original Shinobi) or paralyze (Shinobi, Nightshade) enemies. An ability called Shuriken Blast could be used to throw a shuriken in a circle around Joe, or in a quarter circle above or below Joe, depending on if he is in the air or not.
Double Jump: Enables Joe to attain higher altitude or to avoid attacks.
Shuriken Storm: An advanced skill in Oboro Taijutsu that made it's debut in Revenge of Shinobi. Executed during a double jump, Joe hurls his blades in all directions, hitting any and nearly all would be attacker.
Juji Uke: Used in Revenge of Shinobi, Joe holds two kunais before him to guard against attacks.
Hayabusa Otoshi: A skill used originally by Joe Musashi in Shinobi III. A powerful diving kick that throws an enemy off guard or kills aerial enemies.
Joe Musashi is a guest character in Shinobi (2002) and Nightshade, and an unlockable in Shinobi 3DS.
While Jiro is his father, their bloodline is linked via an alternate universe. In Jiro's universe, Joe wasn't born in the 20th Century but will be born to him in the late 21st Century.
He is voiced by Casey Roberson in Shinobi (2002) and Nightshade, and by Toshiyuki Morikawa in Japanese. Instead of his own lines, he shares them with Moritsune in Shinobi, while in Nightshade he shares some additional words from Aomizuchi, plus new lines depending on the Ninjutsu he uses.
In Sonic & All-Stars Racing Transformed, one of his victory quotes is "For Jiro, my ancestor" confirming his familial ties with Jiro Musashi.
In Sonic & All-Stars Racing Transformed, Joe's All-Star Theme is a shortened remix of the song "Shinobi ~An Ephemeral Tale" used as the main theme of 2002's Shinobi.