Swamp Thing

Swamp Thing is the eighth episode of the first season of NBC's Justice League. It first aired on November 20, 2018. It is the eighth episode overall.

Synopsis
The Justice League meet Abby Holland, who claims that a monster attacked her. The League investigate, only to learn that the monster may be trying to help her not kill her.

Starring

 * Ben Affleck as Bruce Wayne/Batman
 * Joseph Gordon-Levitt as Tim Drake/Red Robin
 * Emma Stone as Stephanie Brown/Spoiler
 * Yvonne Strahovski as Kate Kane/Batwoman
 * Tyler Hoechlin as Clark Kent/Superman
 * Sarah Hyland as Barbara Gordon/Batgirl
 * Alexander Gould as Dick Grayson/Nightwing
 * Gal Gadot as Diana Prince/Wonder Woman
 * Katie Cassidy as Dinah Lance/Black Canary
 * Grant Gustin as Barry Allen/the Flash
 * Melissa Benoist as Kara Danvers/Supergirl
 * Chris Wood as Mike Matthews/Mon-El

Guest Starring

 * Joseph Morgan as Agent Cameron Chase
 * Sam Witwer as Agent Sarge Steel
 * Roger R. Cross as Swamp Thing
 * Heather Locklear as Abby Holland
 * Vincent D'Onofrio as Anton Arcane

Trivia

 * This episode achieved 11.40 million U.S. live viewers.
 * Katie Cassidy and Grant Gustin do not appear in this episode as Dinah Lance and Barry Allen.
 * This episode received mixed reviews. It scored 45% on Rotten Tomatoes, a 60 out of 100 on Metacritic, and 7.4/10 on IGN.
 * Guest stars in this episode include Joseph Morgan, Sam Witwer, Roger R. Cross, and Heather Locklear as Cameron Chase, Sarge Steel, Swamp Thing, and Abby Holland.
 * This episode is rated TV-14 for S.