The third season of Swamp Thing consists of 10 episodes.
- Crystal Reed as Abby Arcane (10/10)
- Derek Mears as Swamp Thing (10/10)
- Henderson Wade as Matt Cable (7/10) (eps 1-7)
- Maria Sten as Liz Tremayne (8/10)
- Jeryl Prescott as Nimue Inwudu (8/10)
- Ian Ziering as Daniel Cassidy (9/10)
- Leonardo Nam as Harlan Edwards (8/10)
- with Ricky Whittle as Jason Blood (8/10)
- and Matt Ryan as John Constantine (Earth-19) (10/10)
Special Guest StarsEdit
- Michael Beach as Nathan Ellery (3/10)
- The Family Arcane
- The Past
- Two Weeks Later
- Darkness Rising
- Rivers of Blood
- Love and Death
- A Murder of Crows
- Down Amongst The Dead Men
- Long Into An Abyss
- What Happens In Gotham
- The Big Bad of this season is Anton Arcane.
- This season loosely adapts Swamp Thing Vol. 2 #26-33 and 50-53.
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