G5

G5 (G5, Gī Go) is a Machine God battle robot created by The Organization. It is a member of the Monster Association.

Appearance
G5 is a large cybernetic robot that bears resemblance to a samurai. It wears shiny metallic armor with long shoulder-pads and spiked claws on its forearms. Its face is covered by a mask with a slit that reveals a single eye in the center.

Personality
G5 has a straightforward yet secretive personality. It only speaks when it has a question or when the situation is appropriate. It appears to mind his own business unless it wants to add his thoughts that would be beneficial to the situation.

G5 is faithful to The Organization, following their orders to cooperate with the Monster Association. It does not give away any information about The Organization.

As a robot, it thinks rationally and not impulsively. It offers his idea of using Narinki's mercenary group as an advantage for the Monster Association instead of killing them.

It also seems to have some intolerance towards some of the monsters. He questioned Gyoro Gyoro if monsters could kill one another, focusing on Royal Ripper's murderous attitude towards his supposed allies.

Monster Association Arc
On its way to join the Monster Association on behalf of the Organization, G5 coincidentally runs into Narinki's Private Squad and captures them, bringing them to the Monster Association. When questioned about who he was by Gyoro Gyoro, G5 tells her that The Organization had sent it to join the Monster Association, probably to help them bring the Hero Association down. When Gyoro Gyoro asks him what The Organization is, G5 keeps quiet.

As the Monster Association are deciding what to do with the mercenaries, G5 steps in and convinces Gyoro Gyoro to use them as their fodder, because of their special battle suits. Gyoro Gyoro agrees and Do-S makes them her love slaves.

He encounters Royal Ripper and The Great Food Tub as they are arguing over Tareo, promptly grabbing a nearby monster to throw at Great Food Tub's mouth in order to quench his hunger; Royal Ripper notices he is carrying something, which G5 explains is a "hobby of his". The object in question turns out to be the head of the Metal Knight combat unit that followed Elder Centipede on his way back to the monster's hideout; G5 says he kept it because it is "a precious sample" he wants to examine in detail.

After the S-Class heroes invade the Monster Association Headquarters, G5 encounters Child Emperor and Waganma after destroying the former's Radio-Controlled Sentry. He is able to resist the attacks of Child Emperor's Enemy Machine Disabling Device: Bug Kun and swiftly destroy it. G5 battles the newly combined Underdog Man, Mad Dog Underdog Cerberus, while hampered by Child Emperor's bird lime missiles. As G5 battles Mad Dog Underdog Cerberus, Child Emperor and Waganma escape.

Having managed to defeat Underdog Cerberus, G5 comes across Atomic Samurai. G5 fares better than the previous monsters who fought Atomic Samurai, and he is able to exchange several parries. In the end, however, Atomic Samurai is the superior swordsman, and G5 is cut apart by the hero's Atomic Slash. However, the robot inside G5's core manages to escape.

Abilities and Powers
As a Demon-level threat and a "machine god", much like G4, it can be assumed that G5 is a powerful Mysterious Being. It is assumed that he is an upgraded version of his predecessor and thus significantly stronger than it. Additionally, despite only being a Demon-level monster, his design was advanced enough to remain unaffected by Child Emperor's technology, and the hero went so far as to say that it would be a time-consuming effort to defeat him.

Robotic Abilities
Immense Durability: G5 was able to completely negate the effects of a trap device specifically made by Child Emperor to shutdown machines. His exterior was obliterated by Atomic Samurai's Atomic Slash, but his interior body remained unharmed.

Extendable Arms: G5 can extend his arms.

Immense Speed: G5 has quick reactions as he was able to rapidly extend his arm to grab a nearby monster and throw it at the Great Food Tub's mouth as a substitute meal. He could briefly keep up with Atomic Samurai in a sword duel, and was able to escape from him once Atomic Samurai destroyed his external body.
 * Speed Adjustment: G5 can adjust his speed to better suit his opponent, he utilized his Max Speed against Atomic Samurai in an attempt to overwhelm him, but it was not enough.

Technique Copy: G5 analyzes his opponent's fighting style and copies their abilities.

Double-Jointed Limbs: G5 additional range of motion from his flexible limbs, allows for unconventional angles of attack with his sword.

Simulation and Prediction: G5 can model an opponent's attack and simulate an outcome from the data.

Laser Beams:

Fighting Style
Expert Swordsman: While his actual combat prowess is currently unknown, it is likely that G5 is skilled at sword fighting based on it possessing a pair of katanas. He can also copy the fighting styles of others, as was seen with Atomic Samurai. He also stated that he can improve the techniques that he has copied but was still defeated by the hero, so this was likely a boast.
 * Flash Attack: Copied from Atomic Samurai by watching his battle with several monsters and Sword Devil Executioner.
 * Atomic Slash: Copied from Atomic Samurai by watching his battle with several monsters and Sword Devil Executioner. However, he wasn't able to defeat Atomic Samurai, possibly because he wasn't using the fullest extent of his Atomic Slash or G5 simply wasn't fast enough to completely replicate the technique.

Equipment
Katanas: G5 is equipped with two katanas.

Claws: G5 is also equipped with two claws in his hands.

Navigation
G5