Chen, created with some flaws at the Capellan Confederation, managed to take two tasks at the hand of the Chancellor. One of which was the personal advisor for the Chancellor. The second is what he was trained to do, as one of the elite Death Commandos.
Combat isn't his specialty, however he's not afraid to get dirty when the shit hits the fan.

The goggles he's wearing now are not part of his Death Commando uniform. His eyes developed improperly as the rest of him developed. He complained about this, and had to endure an operation to get his vision corrected. Before he could only see in monochrome, had blurred vision, and could not see at night. The electronics fixed everything but the monochrome...