Gyoro Gyoro

Gyoro Gyoro (ギョロギョロ, Gyorogyoro) is a Mysterious Being of the Monster Association acting as Orochi's closest advisor. He is one of the main antagonists of the Monster Raid, Super Fight and Monster Association arcs.

Appearance
Gyoro Gyoro appears as a large slug-like monster with a single eye and eight arm protruding through its head. It also has four arms and stubby legs.

Personality
Gyoro Gyoro is shown to be very serious in his duties of aiding Orochi and very loyal to the "Monster King" as he's the only member of the association to speak of Orochi in high regard, formally calling him "Your Majesty". Unlike Orochi who would near instantly kill a subordinate monster if they fail their mission, Gyoro Gyoro is shown to care or at least value his fellow monsters more as he sent his spy drone to warn Gouketsu to return or he might face a real challenge from the S-Class Heroes. This is further showcased when he requested Orochi to spare Do-S as her unique ability might prove advantageous in the future war with the Hero Association. However like Orochi, he also has low tolerance for failure as when Orochi prepared to devour Awakened Cockroach for failing to kill Genos, Gyoro Gyoro merely proceed to berate the demon-level monster for returning after failing his mission.

Gyoro Gyoro is also shown to have a sadistic sense of humor as he set up the message to declare war on the Hero Association, he proceeded to toy with the officials with a false ideal of co-existence and harmony between humans and monsters before laughing as Destrochloridium shot an official in the head and proclaiming the idea of harmony between monsters and humans to be the height of humor for the Monster Association.

Super Fight Arc
Gyoro Gyoro is speaking with Monster King Orochi about the monster raid's situation and Gouketsu whereabouts.

After Tatsumaki killed the Hundred-Eyes Octopus, Gyoro Gyoro finds the situation troublesome, but Orochi sees it as not a concern because they can make as many Mysterious Beings as they please.

Through his robot, Metal Knight questions Orochi and Gyoro Gyoro about their goals and while they tell him destruction is a natural part of a monster's instincts, but it is not their end goal.

Gyoro Gyoro denies Phoenix Man's request to reinforce cornered monsters and tells Gouketsu to return from the stadium.

Monster Association Arc
Destrochloridium takes over the body of a Hero Association staff member and infiltrates the Hero Association with one of Gyoro Gyoro's drones to deliver a message to the Hero Association. It briefly pretends that the Monster Association's goal is merely to live in peace and be free from the threat of elimination. However, when an Hero Association staff member promises that they won't touch the Monster Association, Destrochloridium kills him, and Gyoro Gyoro reveals that they were just joking. The real message was that the Monster Association was declaring war and that they would give the HA 3 days to prepare. The hostage was only taken to ensure that the Hero Association couldn't ignore the challenge.

It gives a massive speech to the member of the Monster Association and witnesses Orochi eat Awakened Cockroach, as well as persuading Orochi to spare Do-S for her useful ability. Though its drones, it sees Gouketsu's corpse.

Abilities and Powers
Spy Drones: Gyoro Gyoro has several spy drones and can communicate through them.