Description:  The Swamp Thing (1991) cartoon was a short-lived, five-episode children's series by DIC Entertainment that followed scientist Alec Holland after an explosion transforms him into the Swamp Thing. The animated show features his ongoing battle against the villain Anton Arcane and his group of mutated henchmen, the Un-Men, with Swamp Thing protecting the environment and seeking to find a way to regain his humanity.

Origin: Scientist Alec Holland is caught in an explosion in his Louisiana lab, where his bio-restorative formula is also spilled. The combination of chemicals and the swamp's life transforms him into the plant-like Swamp Thing.

Plot: The main conflict is the ongoing struggle between Swamp Thing and the evil scientist Anton Arcane, who wants to capture him for his own nefarious purposes. Arcane is accompanied by his gang of mutated henchmen, including Dr. Deemo, Skinman, and Weedkiller.

Themes: The cartoon has an environmentalist theme, with Swamp Thing often fighting criminals and supervillains who threaten the balance of nature. It also explores the desire to return to a human form, with Swamp Thing's stepdaughter, Abigail Arcane, hoping to help him.

Key characters: Swamp Thing: Originally Alec Holland, a scientist who gains control over plant life after a lab accident. Anton Arcane: The main antagonist, a mad scientist who created the monster. The Un-Men: Arcane's group of mutated henchmen, such as Dr. Deemo, Weedkiller, and Skinman. Tomahawk and Bayou Jack: Two allies of Swamp Thing who assist him in his fight against Arcane.