The Robobot Armor retains the basic shape of the Invader Armor, but with details that make it resemble Kirby. It has a predominantly pink frame with pale yellow details and red feet, as well as a Kirby-like face on its front. It has a blunt silver spike on each shoulder, resembling the tip of a screwdriver. The Robobot Armor also has a bronze-colored jetpack strapped behind it. When inside of the Robobot Armor, Kirby gains a pair of goggles that rest atop his head.
The color and design of the Robobot Armor changes when it takes on a different Mode. It can also morph the spikes on its shoulders into various tools, such as a Wrench or a Drill.
Stickers, of which there are over 200, may also be collected during gameplay and can be attached to the Robobot Armor's arms to change its appearance. Two different stickers, one on each arm, may be attached to the Robobot Armor at one time. If no stickers are applied, the Robobot Armor's shoulders feature winged gears with yellow stars in their centers by default.
The Robobot Armor is a durable suit that takes a low amount of damage from most enemies. It is also powerful, as in its normal Mode, it is able to lift, punch and destroy heavy objects and enemies that are otherwise impervious to attack. Pressing up near a screw on the ground allows Kirby to use the Robobot Armor's Wrench to twist it and move the platform he is on. He can also use the Wrench move to activate devices such as cranks.
Pressing B near a Copy Ability-bearing enemy allows the Robobot Armor to scan it and take on a Mode based on that enemy's Scan Spec. There are fourteen Modes (including Kirby: Planet Robobot's final weapon) that the Robobot Armor can take on, each with its own powers and abilities. If Kirby has a Copy Ability when inside of the Robobot Armor, it does not affect the Mode of the Robobot Armor, meaning that Copy Abilities and Modes are exclusive from each other.
Despite its large size, Robobot Armor is still able to perform a double jump and hover a short distance, dash, ride on a Warp Star and fit in a Cannon. Guarding in Robobot Armor causes the armor to ball up, retracting its arms and legs. However, it cannot truly fly (without the Jet or Parasol Modes), and its large size prevents it from entering certain areas.
When Kirby has finished using the Robobot Armor, he may dismount it by putting it into a mechanical station and re-enter it later if it is needed again. Robobot Armor will also disappear if Kirby tries to exit a stage while using it.
List of Modes
The default form of Robobot Armor. It can scan some enemies and gain a Mode based on that enemy's Scan Spec. It is also able to perform a three punch combo attack. It can survive most attacks without receiving damage, which is often used in ways such as jumping on an enemies. However, it can only perform a double jump and a short hover before falling.
Allows the Robobot Armor to send out a small bomb robot that can move forward and climb walls. Three of these robots can be sent out at one time. Charging the move sends a bomb robot soaring through the air.
Gives the Robobot Armor two large saw-blade arms that can be thrown through the air in a circular path, upwards and downwards. It can also punch, charge to send a saw-blade flying ahead and spin the saw-blades.
Gives the Robobot Armor wings and allows it to fly in the air and destroy enemies using a laser blast and a charged blast that releases three or four powerful missiles. It can also perform a dodging maneuver.
Gives the Robobot Armor large wheels that allow it to charge forward and horn attachments on the front that pierce enemies the Armor rams into. It can also sometimes change planes at will and spin in place, causing a fiery blast.
Spoiler alert: Plot-specific details are within this box
The Robobot Armor has scanned Meta Knight's ship! It's equipped with the Planet Buster. Capture debris, and press A to fire it!”
— In-game description for Halberd Mode • Kirby: Planet Robobot
The final weapon of Kirby: Planet Robobot is the Halberd Mode for the Robobot Armor, which is obtained through analyzing Meta Knight's signature warship. It is used during the final boss battle with the Star Dream, where it is able to fire shots from the Combo Cannon and deflect some projectiles that come towards it. It also has the ability to absorb debris from the objects Star Dream throws at the Halberd and launch them back at it in a powerful attack known as the Planet Buster. At the end of the battle, the Robobot Armor revealed its ability to extend a gigantic drill, which it used to unscrew the top of Star Dream.