Gyoffrey

Gyoffrey is a humanoid aquatic monster with a half-fish, half-man appearance.

His official disaster level is unknown, but his actions show he is powerful enough to overwhelm low-ranked heroes.

He makes his appearance during an assault on the Hero Association Hospital.

There he encounters heroes including Mumen Rider and Tanktop Master.

Gyoffrey has the rough form of a half-fish, half-human creature.

His design emphasizes his status as a sea-type monster, with a bestial and intimidating presence.

Gyoffrey behaves violently and arrogantly, attacking the Hero Association Hospital without hesitation.

He clearly enjoys overpowering weaker opponents, as shown when he easily dominates Mumen Rider.

Gyoffrey possesses enough physical strength to completely overpower Mumen Rider in close combat.

He pins the hero down under his foot, demonstrating both superior power and confidence.

Despite his strength, he is not invincible.

When Mumen Rider grabs his leg and holds him in place, Gyoffrey is left open to a devastating follow-up attack.

Gyoffrey appears during an incident where the Hero Association Hospital is under attack.

His invasion threatens injured heroes and personnel inside the facility.

In the battle, he crushes Mumen Rider underfoot, showcasing a clear difference in raw power.

However, Mumen Rider manages to grab Gyoffrey’s leg, stopping his movement for a moment.

This brief opening allows Tanktop Master to charge in with his signature move, Tanktop Tackle.

The attack hits Gyoffrey head-on and sends him flying out of the hospital building.

Gyoffrey’s defeat highlights both the bravery of weaker heroes like Mumen Rider and the overwhelming power of an S-Class hero like Tanktop Master.

Although his screen time is short, his appearance adds tension and drama to the hospital attack scene.

Mumen Rider

Gyoffrey initially overwhelms Mumen Rider without effort.

He steps on Mumen Rider, pinning him down and asserting dominance in a one-sided fight.

However, Mumen Rider’s determination allows him to grab Gyoffrey’s leg.

This small act of resistance directly contributes to Gyoffrey’s defeat.

Tanktop Master

Tanktop Master arrives while Gyoffrey is engaged with Mumen Rider.

Taking advantage of the moment when Gyoffrey’s leg is restrained, Tanktop Master delivers a powerful Tanktop Tackle.

The tackle sends Gyoffrey crashing out of the hospital.

This interaction positions Gyoffrey as a mid-tier threat who is easily handled once an S-Class hero gets serious.

Gyoffrey appears only in the Murata-drawn version of One-Punch Man and not in the original webcomic.

His exact disaster level is never stated, leaving his official ranking within the Hero Association’s threat system undefined.