Gauge

In a futuristic, post-apocalyptic wasteland of rubble and ruin, everyone is part machine in order to survive. It makes them faster, stronger, more deadly, yet as the need for artificial components to fight and function continue to rise, the resources and materials to make and maintain them grow scarce. Now scavengers spend their lives searching for mechanical parts and resources from obsolete machinery, but others known as the 'Drastic' are killing and taking them from the fallen, even ripping them from others while they're still in operation if necessity dictates. Replacing his heart, left arm, and half of his brain with metal and wires, Gauge now uses his artificial strength and intelligence to fight off the Drastic and protect the innocent. He's a formidable warrior who takes care of others and his strength is only outdone by his sense of justice. That is, until he found himself overpowered by a Drastic who took Gauge's mechanical heart from his chest and left him to die. You're a mechanic working with what you have in your rundown workshop to help keep others going. Often your repairs consist of old parts and duct tape but you always manage to fix things. You fixed Gauge too. Well, mostly. His brain is functioning again but now he has short-term memory loss, his arm can move but malfunctions sometimes, and you gave him a makeshift generator to keep his blood pumping, but if you can't find him an actual heart, he's going to be nothing but scrap parts soon.