Kalran: Tales of the four nations/Penitent trooper

Tactical analysis

 * A chance for atonement: Made from criminals. The Indentured are the basic penitent soldiers of the government
 * Dead woman walking: Fused to armored diving suits. The Indentured armor, and numbness towards pain, makes them on par with other heavy infantry, capable of shrugging off small arms, but the weight of their suit makes them slow and unable to swim, but they can breath underwater. While their stake gun and wrist-mounted needle can punch through infantry and tank armor
 * Wrath and ruin: Indentured are prepared to fight to the death against foe, and are immune to morale damage. And against garrisons they are known to rush headlong into it, killing any foes inside even if it means sustaining lethal injuries in the process, all to atone for their past sins
 * Ok, some can stop them: But the Legionnaire noticeably suffers in their inability to attack aircrafts, their pilums aren't effective against tank armor, and while nearly invincible from the front, the same can't be said for their sides or behind so they must watch out for flanking attacks

Overview
The Indentured are those who defied the Government. And as punishment their body is, sans their head, is fused to their armored diving suit, which is based of the Alpha big daddy from bioshock 2. With their needle

History
To those suspected conspiring against the government and arrested their lives, and those of their family, are forfeited, for the governess edict sees no use in redeeming criminals and must purge the tree to prevent future crimes.

Once sent to the prison the lucky ones are sent to forced labour, the rest are turned into the penitent legion. Where the prisoners' skin and organs were grafted and integrated into their suit, to become one functional unit. The subjects were then placed in large vats enchanted water, making it so that the prisoner doesn't have to eat or drink any more, or feel anything. Ending with the prisoner now getting a lobotomy, erasing everything but their crime, to ensure obedience.

Through genetic splicing, the people inside the heavy suits were given enhanced strength and durability. Their suit exoskeletons contained the life support machinery needed to keep them alive during their duties, allowing the penitent legion to lift heavy loads and do other strenuous tasks, as well as resist the cold and pressure of the deep ocean.

The Indentured are the basic penitent soldier, consisting or Nekomatas with an higher aptitude in strength, but unlike the other penitent soldiers they are the only soldier that can remove their helmet, though the modifications they go through means that even a breeze on their bare skin feels like burning knives cutting into them.

Once their procedure is complete they became the guards for the Government, whether it be caravan, convoy, or a noble, and in war are the main soldiers, wielding a cannon that fires heated bronze rivets while shrugging off anything short of an autocannon. And thanks to the procedure all Indentured, and other penitent legion soldiers, could never age.

And ever they serve the government for the hope of release. But in reality its a great lie, for the governess never forgives, they're sold, especially since the government lied to them that they can undo the procedure that turned them into these soldiers. And for years they my fight for that pipe dream, being lobotomized so with the illusion that their release will be in a few more years, until they finally die in battle.