Kathryn Hahn has been casted as an as-yet-unnamed neighbor in Disney+'s WandaVision. Additionally, Kat Dennings and Randall Park are scheduled to reprise their roles as Darcy Lewis and Agent Jimmy Woo, respectively, in the show.
Hahn voiced Olivia Octavius in Sony Pictures' Spider-Man: Into the Spider-Verse, but is best known to the casual public for her role in Amazon's Transparent.
Dennings last appeared as Darcy in Thor: The Dark World, while Park appeared as Agent Woo in Ant-Man & The Wasp.
Here is Disney's official description of the show's portion of the panel:
"Stars Paul Bettany and Elizabeth Olsen were on hand for their new series, Marvel Studios’ WandaVision. Bettany returns as Vision and Olsen as Wanda Maximoff—two super-powered beings living their ideal suburban lives who begin to suspect that everything is not as it seems. Kevin Feige surprised the audience by bringing to the stage Kat Dennings and Randall Park who will reprise their roles from Thor and Ant-Man and The Wasp, and then he introduced Kathryn Hahn who has been cast as a new character in the series. Director Matt Shakman and head writer Jac Schaeffer joined everyone on stage to reveal that the streaming series will blend the style of classic sitcoms with Marvel Cinematic Universe. WandaVision premieres on Disney+ in 2021."