The Swamp Thing returns to battle the evil Dr. Arcane, who has a new science lab full of creatures transformed by genetic mutation, and chooses Heather Locklear as his new object of affection.

Charley Brewster, a high school student, accidentally discovers the true and creepy nature of Jerry Dandrige, his dashing and enigmatic new neighbor; but no one seems willing to believe him.

A growth hormone experiment gets out of hand, when the the resulting giant man-eating rats escape, reaking havoc on the unsuspecting campus. Much blood-letting follows.

Morgan and his friends are on a hunting trip on a remote Canadian island when they are attacked by a swarm of giant wasps. Looking for help, Morgan stumbles across a barn inhabited by an enormous killer chicken. After doing some exploring, they discover the entire island is crawling with animals that have somehow grown to giant size. The most dangerous of all of these, however, are the rats, who are mobilizing to do battle with the human intruders.

To win the right to marry his love, the beautiful princess Andromeda, and fulfil his destiny, half-God-half-mortal Perseus must complete various tasks including taming Pegasus, capturing Medusa's head and battling the feared Kraken.

When an atomic war on Mars destroys the planet's women, it's up to Martian Princess Marcuzan and her right-hand man Dr. Nadir to travel to earth and kidnap women for new breeding stock. Landing in Puerto Rico, they shoot down a NASA space capsule manned by an android. With his electronic brain damaged, the android terrorizes the island while the Martians raid beaches and pool parties

When scientists exploring the Amazon River stumble on a “missing link” connecting humans and fish, they plan to capture it for later study. But the Creature has plans of his own, and has set his sights on the lead scientist's beautiful fiancée, Kay.