Alyx Vance is a character from Half-Life series of first-person shooter video games by Valve Corporation, first appeared as the deuteragonist of Half-Life 2 and its Episodes, and later as the titular playable protagonist in Half-Life: Alyx. She is the daughter of former Black Mesa scientist named Eli Vance, a woman in her mid-twenties, and a prominent figure in the Resistance opposing the Combine oppression.