Mega Man ZX Advent/A-Trans Forms

Reploid/Human

 * Main Weapon: Buster Shot

This is Grey's/Ashe's normal form. In this form, you can crouch, crawl, and float along the surface of water. However, you can't dash or climb walls. This form comes with a basic buster gun that cannot be charged. Grey's gun can have three bullets on-screen at a time, while Ashe's can only have two.

Model A

 * Main Weapon: Buster Shot
 * Sub Weapon: Homing Shot

This form has a chargeable buster gun. Grey's gun can have three bullets on-screen at a time, and can fire charged shots similar to those of Model X in the first ZX game. Ashe's gun can only have two bullets on-screen at a time, but her fully charged shot is a long, thin "Reflect Laser" that rebounds off walls, much like the Gemini Laser from Mega Man 3.

The sub weapon is the Homing Shot. Hold the sub weapon button and the gun projects a conical field in front of you. Any enemy that enters this field will be targeted, and will remain targeted even if they move outside of the field. After targeting some enemies, release the button to fire. Grey will fire a bunch of shots that will home in on each targeted enemy, while Ashe will fire a single shot that hits every targeted enemy, one at a time. This uses weapon energy.

This form also has the Giga Crush attack. Hold the Giga Crush button and a cube appears around you and expands. When it reaches full size, release the button to fire a barrage of shots that hit every enemy on the screen. This uses all of your weapon energy, and can thus only be used when your weapon energy gauge is full.