From the handbook (Page 14):
Built by Academy
Mobile unit - Combat - Weapon: Lighting Rod.
The finest minds of Creon have captured and contained the electrical impulses which create lightning. Not only that, but they have found a means to hurl these energies at will, and with amazing accuracy. The Shock Trooper is the logical incarnation of this ability. He carries a sizeable storage device on his back and holds a large emitter for directing a sizzling bolt of energy at the enemy. Heavy head gear, insulating armor, gloves and boots keep the Shock Trooper insulated from both electrical currents and battery acid. These brave soldiers are said to suffer little upon their demise since they explode in a fiery conflagration.