Swamp Thing [Alec Holland]; Matt Cable; Abigail Arcane; Jack; The Conclave; Mayor Hans Klochmann
Swamp Thing finds himself in a small town where a German clockmaker has made life-like robots to populate his town. Unfortunately, the Conclave shows up to learn the secret of the robots from Klochmann.
Abigail Arcane; Alfred Pennyworth; Batman [Bruce Wayne]; Commissioner James Gordon; Dr. Hammerschmidt; Driscoll (limousine driver); Matt Cable; Nathan Ellery [Mr. E] (Wayne Foundation member); Swamp Thing [Alec Holland] (Origin recap); Ferrett (Flashback; Cameo); Linda Holland (Flashback Cameo)
The Swamp Thing travels to Gotham to rescue Matt and Abigail and stumbles into the location of the Conclave, the organization that is responsible for the accident that changed him into the Swamp Thing. While in Gotham the Swamp Thing crosses paths with Batman.