Semenov

Semenov is a stalker mentioned in the "Bridge" level of Metro: Last Light.

Overview
He is nowhere to be seen, but his group of stalkers appear, although they were massacred and devoured by Nosalises on the K4 Crossing. A radio message was set up, presumably by Semenov himself, to warn other stalkers that his group has been wiped out. The radio message continues to repeat itself over and over again.