|“||An impressive machine built by the mysterious invaders. It's chock full of advanced technology. It is unknown if this giant robot has any weak spots.”|
|— Vs. Gigavolt • Kirby: Planet Robobot|
Gigavolt is a giant green robot manufactured by the Haltmann Works Company. It has two long arms and a short, cylindrical head with an orange-rimmed screw on the top. In addition, it has giant grey hands with screws attached to segmented arms, two yellow eyes, an orange mouth of three lips, a glowing core inside its green armor, and multiple upward-facing cannons on its back.
Gigavolt II is a purple upgrade of Gigavolt. It has two layers of armor on its hands.
At the end of Stage 3 of Patched Plains, Kirby in a suit of Robobot Armor rolls into a flat area, where two Voltes ambush him. The two Voltes are presumably working for Gigavolt. Once both are destroyed, Gigavolt itself emmerges, its head flying in and connecting to the rest of its body. It sits in the background, and as such, cannot be attacked directly. It instead makes itself vulnerable when it attempts to slam one of its fists on Kirby. Once it hits the ground, Kirby can destroy the protective covering, then unscrew the screw on its hand, dislodging it, and causing the arm to explode. Once both arms are destroyed in this way, Kirby then flies onto Gigavolt's head in an attempt to unscrew the screw there. He has to do this quickly, as Gigavolt deploys six missiles that close in on him. If the missiles do hit Kirby, Gigavolt launches more of them as the cycle repeats. When Kirby finishes unscrewing the last screw, Gigavolt explodes, and the stage exit flies out of it for Kirby to enter.
At the end of Stage 5 of Access Ark, Gigavolt II emerges and attacks Kirby. It has two layers of armor on each hand, as well as two attacks: It can pound the ground three times in a row with one hand, and it can release shock waves with a single pound. It is defeated the same way as Gigavolt. When Kirby tries to unscrew the screw in Gigavolt II's head, the robot releases nine large missiles that deal more damage when they make contact.
|“||The second edition of the Gigavolt was developed for the express purpose of eradicating all obstacles. Priced at 8,600 million Haltmanns, it's twice the cost of a first-generation Gigavolt.”|
|— Vs Gigavolt II • Kirby Planet Robobot|
- Gigavolt and Gigavolt II are the only creations of the Haltmann Works Company that have their exact costs listed, at 4,300 million and 8,600 million Haltmanns, respectively.