Erwina Prowley (or Aunt Prowley) was a ranger who, along with her daughter Lily Prowley, raised Walker following the death of his parents.

During the prologue Prowley gets captured where General Cross stabs Prowley in the chest and killing her. Though she lives on through a hologram that only Walker knows about upon getting the Dash ability and informs Walker about "Project Dagger." Her hologram doesn't appear again throughout the campaign.

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