In WandaVision, Kathryn Hahn plays Wanda's nosy, but lovable neighbor Agnes, and we were able to speak with her about how she researched the part and what initially attracted her to the role.In WandaVision, Kathryn Hahn plays Wanda's nosy, but lovable neighbor Agnes, and we were able to speak with her about how she researched the part and what initially attracted her to the role. WANDAVISION Exclusive: Kathryn Hahn Talks Playing Agnes & Prepping For The Mysterious Part