Just press space. When it reaches the one with the picture of him, press the right arrow to show: 1. Him without the armor. 2. Him with the armor. 3. One of his turrets.
His backstory can be found in the old bio project. His energy field can repel 10-15 average laser blasts, a few spells, or twenty pounds of brute force. Those yellow and grey things going through the tubes are bullets. The yellow things in midair are discarded shells.