Lex Luthor returns, kidnaps Lana, forces her to marry him, and assumes the identity of a doctor that created a weapon that could paralyze Superboy forever.

A heart attack patient, who is also an escaped convict, transforms into a cyborg with a heart powered by kryptonite.

Superboy and Lana get caught in the middle of a battle between two vampires.

Trapped on a deserted island after Andy's motorboat sinks, Clark gets stripped of his powers by an alien who also kidnaps Lana.

Bizarro, an imperfect duplicate of Superboy, is accidentally created when the real Superboy steps in front of Professor Peterson's new duplicating ray.

Superboy battles to free Lana from Bizarro while Prof. Peterson uses his duplicating ray on kryptonite to create Bizarro Kryptonite with the hope that it will end the Bizarro menace.

Superboy and Lana pretend to be the adoptive parents of Mr. Mxyzptlk when he returns from the fifth dimension to stop the havoc caused when a giant follows him seeking revenge.

Superboy must stop a robot that has reprogrammed itself to avenge the death of its creator by killing both Andy and his father.

Superboy is shot with a laser by Lex Luthor that sends his powers out of control and makes him dangerous to others.

A dark, malevolent force breaks its bonds and seeks to eradicate Superboy, the greatest force of good.

A female android from the future assists Superboy against another android sent to destroy him.

After running tests on kryptonite to try and neutralize its effects on Superboy, the military accidentally alters it so it has emotional effects on him, making him apathetic.

A doll belonging to a shy waitress comes to life and turns her into a sorceress and then they both work to make Superboy fall in love with her.

Hoping to impress Lana, a fellow student invents an energy capsule that makes him a superhero, but he is unable to control his new found powers.

A lost serum must be found that keeps vampire cravings at bay before Superboy and Lana become undead forever.

Superboy falls under the spell of the evil sorcerer Prodo until a mysterious man named Brimstone lends his assistance. Philip Michael Thomas guest stars.

Two aliens, claiming to be Superboy's birth parents, Jor-El and Lana, come to Earth looking for their son.

Superboy finds things get complicated when Lana finds out about his secret identity while on the aliens' ship.

A rock singer faces an attempt on her life.

A crazed genius seeks revenge on Superboy for being imprisoned after he develops a suit that steals away the superhero's powers.

While spending the weekend at an Andy's Uncle's old mansion, Andy, Lana and Clark get pulled into a vortex leading to a ghost world.

Lana's body is overtaken by a vengeful soul looking to settle a score over unrequited love.

After the villain Nick Knack escapes from prison, he captures Lana and Andy and probes their minds discovering Superboys weaknesses. Gilbert Gottfried guest stars.

Johnny Avonasac, a tennis player, finds a mysterious potion left behind by his dead brother that transforms into Johnny Casanova, an overweight slob who also happens to be a magnet for women, including Lana.

A sorceress called Tiger Eye captures Lana and turns her into a snake to lure Superboy into attempting a rescue so she can ensnare him in a spell and make him her own.