He gains strength etc by telepathically altering his molecular structure and he can only maintain it for a very short while.
Created by Joseph Samachson and Joe Certa, the unusual detective went by the name of John Jones and used his considerable physical and mental powers to bring criminals to justice.
He has around class 100 strength and can match Supes for like 5mins.
The Headman robots were physically resistant to incredible amounts of damage, and were both quick and agile.
He is shown to have married a human woman who is aware of his other life and supports him.
J'onzz tries to resist influence from D'kay's mind, but her control over his mind tempts him with visions of a fantasy world where all the Martians and J'onzz's family are resurrected by the Entity.