I guess I should have a bio for Zero. So, here it is.

Name: Zero
Series of origin: Mega Man X, this version is from the Mega Man Zero series.
Bio: A legendary freedom fighter in the Zero series, he's a die hard warrior who doesn't hesitate to take action. However, behind his cold and emotionless attitude lies a wounded soul. Zero is a Reploid, an android with complete free will and thought processes comparable to that of humans. Zero also has a learning system that allows him to easily learn new attacks.
WeaponsZ-Saber: His preferred weapon, it has seen him through many battles. He is able to perform many attacks with it. He is holding it in the first image in this post
Z-Buster: A long range weapon that fires energy shots.

Shield Boomerang: The Shield Boomerang (シールドブーメラン?) is a weapon used by Zero in the first three games of the Zero series and was constructed by Cerveau from gathered data about Zero. It is an energy shield created by spinning the Z-Saber (mounted onto forearm) around like the blade of a chainsaw. It can reflect most enemy shot attacks. When charged, the shield can be thrown like a razor blade, flying in an ellipse-like path and cutting through several enemies before returning to Zero. Ami seems to have repaired it, as it was not in Mega Man Zero 4, which took place before Zero came to the SM world.
Triple Rod: The Triple Rod (トリプルロッド?) is a lance-like weapon constructed by Cerveau and appears only in the first Mega Man Zero game. It is a modified Z-Saber hilt which can be extended multiple times for additional range and has a spear-like energy tip at the top. As the name indicates, the Triple Rod can be extended three times. When fully charged, Zero will swing the rod around himself like a battle staff, with an energy tip on both ends. Ciel gave Zero a new version before he left for the SM world, which can be thrown like a Javelin.

Chain Rod: The Chain Rod (チェーンロッド?) is manufactured from the remains of the Triple Rod by Cerveau in Mega Man Zero 2. It is a Z-Saber variation with a "loose", extendable Z-Saber tip which is held together by several energy chain links. It can be used to hook onto various enemies, holding them in place by stunning them, pull them closer to Zero for further attacks with the Z-Saber or the Buster Shot, or to simply impale them from mid-distance if already weakened. It can also be used to grab distant energy capsules or to hook Zero to a ceiling, swinging on it, similar to a grappling hook.
Cerveau repaired the Triple Rod, which can now convert into the Chain Rod as well, before Zero left for the SM world.

Recoil Rod: Yet another Z-Saber variation made by Cerveau in Mega Man Zero 3, the Recoil Rod consists of a pair of energy tonfas used for rapid attacks. By charging the rod, it can be used to push away enemies (if not already destroying them) or moving blocks. Furthermore, when charged and released while holding down, the Recoil Rod allows Zero to make a mighty jump vertically to reach areas normally not possible.
Special AttacksRaijingeki (雷神撃? "Raijin Attack"): Zero will perform a forward thrust with the Z-Saber as a blade of blue lightning.
Kuuenzan (空円斬? "Air Circling Slash"): The Kūenzan technique allows Zero to perform a rolling slash attack with his Z-Saber whilst in the air.
Ryuenjin (龍炎刃? "Dragon Flame Blade"): Zero performs a leaping upward slash with the Z-Saber as a blade of red flames.
Hadangeki (波断撃? "Wave Severing Attack"): Zero performs a heavy overhead slash that sends out a wave of energy.
EX SkillsNone so far.
Ultimate AttacksRekkouha: (Rending Light Supremacy) Giga Attack from MMX6. Punches the ground with a charged up Z-Buster, bringing down a salvo of rainbow-colored pillars of energy onto the opponent.
Genmu Zero/Genmurei: (Phantasm Zero) Leaps up and pivots himself, saying "ITTOU RYOUDAN! GENMU ZERO!!!!" before launching a huge, supersonic energy wave from his saber. Based from MMX5 when fought as a boss, namely the 'Awakened' form of Zero. The term used during the attack, 'Ittou Ryoudan' (One Sworded Double Severing) is the art of cutting an opponent in two with a single stroke.
Current locationAmi's basement.