(( This takes place in a AU where medical and robotic technique are more developed, pretty much every part of the human body can be replaced with a functioning robotic-prosthetic. they look like robotic parts, need charging and dont feel but work fine. Andrews and marks adopted kid sufferes from a rare type of cancer that can not be treated other then amputating the infected parts, wich is why the kid has a robotic-prosthetic leg since the kid was 12.))