Showcase Presents: Legion of Super-Heroes #4

In "Mordru the Merciless!", the Legion of Super-Heroes faces a terrifying threat when Shadow Lass inadvertently frees the sorcerer Mordru, forcing four Legionnaires to flee to Superboy’s time for safety. Trapped in Smallville, they struggle to stay hidden while resisting Mordru’s relentless pursuit, even as local gangsters threaten the town and the citizens begin to fight back. As the Legionnaires prepare to return to their own era to confront the menace, Mordru closes in—leaving them with no time to escape.

In "The Colossal Failure!", Colossal Boy finds himself trapped in a dangerous web when he’s blackmailed into betraying the Legion Academy. When his secret betrayal comes to light, the trust he’s built with his teammates shatters—leading to his shocking expulsion from the Legion.

When Superboy Walked Out on the Legion! finds Superboy among a diverse group of interstellar heroes summoned to the planet Thrann to vie for rulership. As rival champions clash and alliances fracture, the planet’s leaders confront the consequences of their experiment in testing heroism through conflict.

In "School for Super-Villains!", the Legion of Super-Heroes dives into the mystery behind Colossal Boy’s sudden expulsion, following up on clues he left behind. With the team infiltrating a mysterious training school for would-be villains, they must navigate a world where power and ambition blur the line between student and threat.

In "Mission Dabolical!", Dream Girl slips into the Taurus gang to uncover their leader, while the Legion finds themselves caught between rival criminal factions. With the Scorpius gang's betrayal unraveling, the Subs step in to free the heroes and take down the Scorpius leader.

In "The King of the Legion!", the Legion of Super-Heroes faces a surprising challenge when their most powerful member is tested in combat by a mysterious figure from the enigmatic group known as The Wanderers. To settle the matter, the Legion launches a trial by tracking down a temporary, artificially created version of the Wanderers, turning the mission into a high-stakes test of skill, strategy, and unity.

In "The Execution of Chameleon Boy!", Chameleon Boy faces a dire choice: he must stand aside as Baron Kodor threatens Princess Elwinda, knowing victory would mean marriage—something he’s forbidden from pursuing. When King Artros’ forces fall, Cham steps forward to fight, defeating Kodor and claiming Elwinda’s hand, only for the Legion to misinterpret the scene and teleport him home, severing the link between their worlds.

In "Twelve Hours to Live!", the Legion of Super-Heroes faces a desperate race against time when a birthday celebration for Brainiac 5 turns deadly—everyone is poisoned, and only twelve hours remain. As Superboy and Duo Damsel grapple with the weight of telling their parents, Karate Kid takes a reckless stand, launching a solo mission to confront the deadly Fatal Five.

In "Burial in Space!", the Legion of Super-Heroes faces a crushing defeat when they’re unable to protect the Seerons, forcing the alien race to fight for their survival alone. Back on Earth, the team’s apparent deaths spark a desperate effort to bring them back—only to be revived through the power of the Miracle Machine, setting the stage for a reckoning in the stars.

In "The Legion's Space Odyssey!", Dream Girl shares a cryptic prophecy with Superboy before several Legionnaires vanish into space. After Superboy appears to die, the remaining heroes honor his memory by building a monument—but the mystery of their sudden displacement and the fate of their missing comrade remains unresolved.

In "One of Us Is an Impostor!" from Showcase Presents: Legion of Super-Heroes #4, the Legion of Super-Heroes faces a chilling mystery when their computer flags a member as an impostor—only to have the real threat emerge during a battle with the villain Sunburst. With trust fraying and the line between ally and enemy blurred, the team must navigate suspicion before the deception is exposed.

In "The Hapless Hero!", Matter-Eater Lad navigates family tension and a surprise date with Shrinking Violet, only to find their evening interrupted by Duplicate Boy. The story finds humor and heart in unlikely connections, as Matter-Eater Lad steps up in an unexpected way.

In this 2010 tale from *Showcase Presents: Legion of Super-Heroes #4*, Chameleon Boy finds himself in a twist of identity when he disguises himself as Dane to win the favor of Janice, a friend of Princess Projectra. As the party unfolds, a missing jewel puts the disguised hero under suspicion—forcing him to navigate secrets, suspicion, and the fine line between who he is and who he pretends to be.

In "Lament for a Legionnaire!", Dream Girl’s haunting vision of Mon-El’s death sets the Legion of Super-Heroes on a desperate mission to alter fate. As Daxam itself rallies to shield its fallen son, a distant relative, Eltro Gand, steps forward to take Mon’s place—only to face a fate tied to the very poison that claimed him. With the power of ancient technology and a sacrifice of his own essence, Eltro attempts to restore Mon, but the cost of resurrection remains unknown.

In "One Hero Too Many!", the Legion of Super-Heroes faces a rare crisis not of villains, but of budget—forced to cut a member due to fiscal constraints. As the team grapples with the emotional weight of the decision, Superboy steps forward, convinced his departure is the only way to preserve the team’s unity.

In "The Mystery Legionnaire!", the head of the android criminal Klim launches a desperate bid to reclaim his body and exact revenge on the Legionnaire who once bested him—only to find the Legion once again standing in his way. As old wounds and mechanical fury collide, the team must confront a foe whose past is as tangled as his circuitry.

In "The Tyrant and the Traitor!", the Legion Espionage Squad is sent to the planet Lahum to prevent a coup by the Dark Circle, tasked with overthrowing the current president while keeping the revolutionaries from seizing control. As most of the team go deep undercover among the rebels, Saturn Girl takes a delicate role within the president’s cabinet, navigating political intrigue from the inside.

In "The Legionnaires Who Never Were!", Saturn Girl and Princess Projectra return from a mission only to find their fellow Legionnaires don't recognize them—because two other Legionnaires, both male, already possess their exact powers. As identities blur and trust wavers, the team must confront a mystery that challenges who they are and who they can be. Mon-El and Element Lad are soon sworn in as the new leader and deputy leader, but the truth behind the doppelgängers remains unresolved.

In "Curse of the Blood-Crystals!", Chameleon Boy, under the influence of ancient crystals forged by Mordru and long cast into space, takes on Superboy’s identity—leaving Ultra Boy to sound the alarm. As the Legion’s heroes arrive to investigate, the impostor Superboy claims everything is under control, but the truth begins to unravel when the real Superboy returns to confront the deception.

In "Murder the Leader!", Saturn Girl and Mon-El face a deadly test of leadership when Tharok and Validus abduct them during their election. With Tharok determined to break the Legion by eliminating its new leaders, Mon-El’s bold move to name Tharok as the new leader sets off a shocking turn—Validus, loyal only to power, doesn’t hesitate to betray his ally.