Modified humans[2] are
humans who have been biologically modified through genetic
enhancements to have enhanced physical traits. So far, the only known modified humans are four of the five children of the
Vinsmoke Family.
The modified humans engineered by Judge all possess superhuman physical strength. During their childhood, with training, the four Vinsmoke siblings' strength and resilience rapidly increased to the point of equalling an adult man's.
[7] Further administration of drugs can also further the augmentations.
[6]
The Vinsmoke siblings also possess an exoskeleton which grants them enhanced durability, leading them to be renowned for their "iron bodies".
[11] They also possess an increased healing rate, as Reiju managed to rapidly heal after her leg was shot,
[12] and was even able to engage in combat a few hours later.