Z-Saber
The Z-Saber is the default weapon of the character Zero. After being trained by Sigma, Zero began using sabers after his training ended. The weapon's most interesting characteristic is the sheer amount of force it can dole out to enemies; it is able to easily slice through 300 mm of reinforced steel in a single stroke. The Z-Saber is also unique in the fact that it apparently doesn't require an energy source to operate. In Mega Man Zero 2, Zero spends around a year far away from any energy source and the Z-Saber is still in full operating condition, though knowing that Zero has an internal reactor, it is entirely possible that the saber can be recharged by drawing energy from Zero himself. Another aspect of the sword is the varying amount of uses it can bestow upon its user: in Mega Man X7, it is able to deflect and return enemy projectiles, it can serve as a catalyst to make other weapons more powerful, can extend various lengths, and can be used in a variety of styles.

Shield Boomerang
Zero's Shield Boomerang is quite a marvel of manipulation technology. Cerveau took the basic model of the Saber weapon and modified it to act as a reflective shield. The ability to hurl the shield in a boomeranging arc is quite impressive as well. While the Shield Boomerang itself doesn't have quite the depth that the Buster and Saber do, it's still a very versatile tool that is now a part of Zero's regular arsenal.

Triple Rod
The Triple Rod is an interesting tweak on the design of the Z-Saber; by giving Zero the power to extend the handle of the sword into a long-reaching spear attack that can be upgraded to strike three times (hence the name), Zero is able to use the new weapon to reach and locate items previously inaccessible. Even more interesting is the fact that the Triple Rod can double as a pogo-stick.

Chain Rod
The Chain Rod is a modification of the Triple Rod made by Cerveau while he was repairing Zero's weaponry. This weapon is very similar of the Andromeda Shun, a character of Saint Seiya series, but your design variant can still utilize a charged spinning attack. Your primary functions are grappling devices; Zero can either latch onto and swing from the ceiling or reach out and hook enemies with the blade. With the Energy Chain EX Skill, Zero can stab and paralyze his opponents to drain their health while restoring his own

Z-Buster MK-II
The Z-Buster (or Buster Shot) is a beam-pistol weapon that is similar to previous Z-Buster designs. Though it isn't the original Z-Buster design from when Zero was originally built (and in fact belongs to the dead Milan), the style and usage of the weapon remains intact. Zero's Buster weapon seems to be rather unique in that it seems to be the only one that is able to store and charge energy for more powerful shots, though it apparently is unable to do so until Zero acquires the Z-Saber during his first Golem battle. The Saber is also able to interact with the Buster Shot, perhaps enabling the charge function when the Saber is used as a magazine. Cerveau, the weapon's creator, may attribute the ability to charge to some of Zero's skill recovery, however. Since this is a handheld weapon, Zero stores it on his back where he can reach it easier - ironically this is the same location that he stored his Z-Saber in the X series.

Z-Knuckle
Replacing both the Rod weapons and the Shield Boomerang in Mega Man Zero 4 is the Z-Knuckle. Zero attacks using his bare hands and super strength; if a fatal blow is delivered, it can rip off a piece of the enemy to be used as a weapon to replace the Z-Knuckle temporarily, or until manually cancelled. It can be charged up to allow for a stronger attack. Such Z-Knuckle weapons include a Battle Axe, a Laser Gun, a Cannon, a Claw