Dr. Eli Vance is a protagonist and the father of Alyx Vance. Alyx Vance is also a protagonist. She is in search of the alien combine in Strangerville. Dr. Vance is always lending a scientific helping hand to his daughter and her cause. They both live and work from their Resistance Research Lab. #restistanceresearchlab #alyxvance #dr.elivance #strangerville