The scientist in the campaign mode is a protagonist and antagonist in crack life campaign mode who has got a normal glass scientist skin.
he is voiced by Dr Fryodor.
he looks like a normal glasses scientists but he seems to be the person in charge of the experiments ocurred during the game.
he is an ally at first spot telling but he ends betraying you at the end of the game.
he is the responsable for the mess because he sold the quimical to the soviets and started the mess in black mesa
"you may defeated me, but... im taking you with me, wait which video game or movie? that the protagonist died in this way i though i was the good guy not the bad asshole"-the scientist at the end of the game.