Frobot

Frobots are major antagonists in the series Amphibia.

They are robotic soldiers built to serve King Andrias as a part of his personal military force, known as the Frog Army to conquer other worlds. They were the products of the Abandoned Factories in Amphibia which resumes their creation in "True Colors". Once they received the signal sent by Newtopia Castle, they flew very fast to the castle in midair to regroup.

Background
Frobots are mechanical war machines resembling frogs and some models are similar to Frobo, but are geared for combat; during and after the episode, and the intro for season 3, there are advanced models of Andrias' Frobots that are created to deal with different types of certain situations. Some are like UAV drones, and some other types would be stronger variants of normal Frobot soldiers.

The Frobots were created during the times of Newtopia's glory days over a thousand years ago, as a sort of defensive or offensive force. Around the time when King Andrias lost the Calamity Box to his former friends, he lost his mechanical army. As a result, knowledge of the robots disappeared from memory and the factories were left to dereliction.

Over 1000 later, one factory was reactivated by Sprig in the episode "Fort in the Road", where it resumes production. The factory's control panel malfunctions and collapses, though not before it manages to finish only one Frobot that would come to be known as Frobo.

In "True Colors", when Andrias regains the Calamity Box, the box linked to the castle sends a signal that reactivates all the factories to start creating an army of upgraded Frobots for Andrias to begin his world-spanning conquest. However, Frobo wasn't affected by the activation signal, leading Andrias to destroy him for his disobedience.

In "The New Normal", the Frobots are seen guarding the flying castle while a newly built silver model with the ability to cloak itself is sent to though a dimensional portal to terminate the main obstacle in Andrias' invasion of Earth: Anne Boonchuy. In "Turning Point", Andrias also sent an enormous bronze model that has smaller green models that it can deploy from its body to Wartwood to obliterate Sasha Waybright, Captain Grime, and the town's citizens, only to be destroyed.

In "Olivia & Yunan," many Frobots of varying sizes and shapes are shown rapidly extracting Newtopia of its resources, some are in the shape of construction vehicles such as bulldozers and cranes since the events of "True Colors" and "Turning Point". A Standard class Frobot is also seen speaking Lady Olivia, showing they are capable of speech like Frobo.

Outdated class
This type was made possibly more than 1000 years ago, though not much is known about them, it might seem this class was a sort of defensive or offensive force for Amphibia.
 * Frobo (only head active)
 * Ancient ones (probably all destroyed)

Standard class
Introduced in "True Colors", this class, at first glance, are almost like Frobo. However, due to being upgraded, they have notable differences in color and features. Each of them have 2 red glowing optics, larger shoulder pads, long arms, skinny legs, voice speakers that are sometimes covered by metal plate attached to the body, a black frog foot symbol on their chests. This model is in black, gray and silver paint jobs. Other than that, each have built-in plasma-based weaponry on the right arm for range combat that has a wire attached to the right shoulder pad and all have thrusters to hover in midair; Which can also have 2 more plasma-based weaponry activated from the back.

One of those models in "Turning Point" has sensor technology that detects Calamity Box energy emitted from Barrel's Warhammer and able to send a distress beacon for back up before the head was smashed by that said hammer used by Captain Grime.


 * King Andrias' invasion army (several destroyed)

Bulldozer-like class
A subtype that is a variation of the Standard class, they are very similar to them but with characteristics of a bulldozer, including a chovel, two tracks for legs and tubes on the back.


 * The one working in Newtopia

Stealth class
This type has a silver and gray green paint job, is lanky and thin to quickly maneuver in urban areas, and has razor-sharp claws attached to 2 long arms. It has a horn that curves backwards at the top of its head, and its optics are bright red. It has tubes on its torso sides as well as 2 different size tubes attached to the blue light part and has long shoulder pads.

It can speak in a robotic voice while also serving as King Andrias' assassin. It has a stealth mode that is an which can hide itself from plain sight on Earth while walking around during daylight, however, magnets can affect the camouflage systems and anything on that Frobot even when camouflage is activated would be still visible. Its left claw can change into plasma-based weaponry. When it is badly damaged, it can do self repair by its claws that act like a blow torch. Also, it can send out dragonfly-like UAV drones to scout the surrounding area that can fire plasma base weapons at the mandible area. It has a self-destruct mode that can cause a big explosion.

One was sent to terminate Anne with the Plantars in Los Angeles, California, USA, Earth. When Andrias activated the fail-safe in an hour due to it not finishing the job, the Cloat-Bot attempted to hunt down Anne once and for all. It is kicked into the atmosphere of Earth by Anne when her Calamity Box abilities were activated, and it was finally destroyed by its self-destruction.
 * Cloak-Bot (auto-destroyed, while both arms are still intact)

Tank class
This type has bronze paint job, gigantic with destructive power and is able to launch smaller robotic reinforcements from its shoulders and the back. Its arms with chest can turn into giant missile launching cannons for said destructive power.

One was deployed at Wartwood and destroyed by the same missiles it launched that were targeting Grime and Sasha.
 * Giant Frobot (self-destroyed)

Tadpole-like class
Frobots of this type are weaker Frobots released by the Tank class as minions and reinforcements for melee combat as well as using numbers to overpower enemies.


 * Giant Frobot's minions (all destroyed)

Trivia

 * During season 3, new variants of the Frobots are being created to go and destroy both Sasha and the resistance in Amphibia and Anne with her friends on Earth.
 * The Frobots are inspired by the Laputian Robots in Castle in the Sky.
 * The stealth, giant, and "Turning Point" standard models are voiced by Troy Baker, who voiced Captain Grime as well.
 * Although the Frobots are seemingly more advanced than the technology found on Earth, some models like the standard class don't seem to be durable at all, as Anne, Sasha and other characters (both Amphibians and Humans) can easily destroy them from a distance and in close combat with melee attacks and weapons (including fists). This is likely because they are recreated from factories that had been shutdown for more than 1000 years ago that the materials to make them might not be well-kept. In addition, Frobo, despite being an older model, could hold off more than his newer standard class counterparts, nonetheless, he was physically destroyed by Andrias' fist when saving Polly's life.
 * It is shown that Frobots can locate each other if another one is nearby, as Cloak-Bot was able to track down Frobo's location following the latter's reactivation.
 * Frobots are often accompanied by animal-like robots known as drones. These include Cloak-Bot's minion drones, which are modeled after dragonflies. A moth-like drone was also created for Andrias as a gift for Christmas, by Bartley, Branson and Blair who planned to create more later on, even though the one seen in "Froggy Little Christmas" was a prototype. This one could also release tiny spider-like robots from its needle. Although they serve the Frobots, it is not stated whether the drones are considered Frobots or are a related type.