Zero is ranked 5th on the tier list. He has a solid projectile in his Zero Buster, excellent range, and good KO moves with his up attack, down attack, and down aerial. He is also fairly fast, which gives him a good approach. Like the other sword users, he can also cancel his aerial momentum with his side attack to increase his survivability.
However, he has no forwards-boosting moves, which limits his horizontal recovery. In addition, the advent of techniques such as jump cancel and momentum cancel have hindered Zero's effectiveness somewhat, as he has no highly exploitable moves that match the caliber of the other top tier characters. However, Zero is still an incredibly strong character, which is why he is ranked high.
Zero shoots with his semi-charged Zero Buster a fast green shot. It looks similar to Mega Man X's side attack, with the difference being that Zero's shot takes a brief moment to charge, meaning it has a bit of startup lag and travels slower at a lower height than X's.
Zero directly hits with his Zero Buster. Holding down the attack button makes Zero deliver an overhead slash with his Z-Saber, an attack that is also able to strike opponents behind Zero. This attack does not cause Zero to skid forward in a single use, but continuing the attack with the Z-Saber allows Zero to move as he attacks.
Zero slashes overhead with his Z-Saber as he performs a small leap, behaving exactly the same as his continued side attack. Holding down the attack button causes Zero to deliver a second, flipping slash.
Similarly to his up attack, Zero slashes overhead with his Z-Saber but without leaping. It also behaves exactly the same as his continued side attack. If Zero is holding an item, he can continuously use this attack as much as the player wants to by holding down the attack button, but otherwise, he will use his standard attack again.
Similarly to his continued up attack, Zero flips in the air as he slashes with his Z-Saber. If the player holds down the attack button, Zero will enter a somehow long hurt animation frame, where he will be unable to perform any other action other than jumping.
Zero has the last character ID in the SSF roster. This means that attempting to perform the Skip Glitch on his Target Smash layout will send the player back to the Stadium Target Smash character selection screen instead of advancing to another fighter's layout. This even applies if Target Test is entered through Classic mode or Adventure mode instead of Stadium.