Young Justice - Season 3 Episode 21 Unknown Factors
Dick Grayson and Jefferson go after Gretchen Goode -- and they encounter the ominous Overlord.
- Genre: Animation, Sci-Fi & Fantasy, Action & Adventure
- Studio: Cartoon Network, DC Universe, HBO Max
- Keyword: superhero, based on comic, superhero team, teen superhero
- Cast: Jesse McCartney, Khary Payton, Nolan North, Danica McKellar, Stephanie Lemelin, Greg Cipes