Yrael, the Eighth Bright Shiner

With the quiet dispatching of whatever guards he finds on the way, Yrael actually reaches the heart of the labs before the other technicians realize that the white-haired person in a slightly-too-white labcoat isn't anyone they recognize (another peril of working for a company with such a large workforce). And by then it's too late.

Sparks fly, screams are heard, machines fry and monitors go dark. Powerful computers are hurled after fleeing lab techs, before Yrael goes himself to hunt them down, laughing.