Sentinel 19
The Sentinel 19s are military-grade units designed and provided by Razor Blade Security. They are designed to take a beating on the front lines of any battlefield, standing between infantry forces and enemy weaponry. The Sentinel 19s powerful armor can withstand almost any artillery thrown at it, and on top of that impenetrable armor, these units bear massive tower shields. Such a combo makes every Sentinel 19 a tank on legs, giving soldiers the shelter that they need to fight on the front lines.
Sentinel 19s also have fully interchangeable parts, which gives them unmatchable flexibility in tight-fit situations. If one has lost a limb, part, or even a head out in the field, it can take parts from fallen Sentinel 19s, and just keep fighting.
These robots can be seen on the front lines of any fight, war, or skirmish, keeping their soldiers protected. But, despite military-level security and control of distribution, a few bits and pieces have found their ways to black markets where they are most commonly used to modify other pre-existing builds. But, with enough skill and funds, a particularly dedicated mechanic could collect each piece to make a full Sentinel 19 of their own.